OPINION OF THE COURT
GARTH, Circuit Judge.
Plaintiffs, mothers of children who attend public schools in the General Braddock School District in Allegheny County, Pennsylvania, brought this action on behalf of themselves and other parents of children attending those schools,1 alleging that the consolidation of various school districts in that county had created racially segregated schools. The district court, in an opinion and order filed on May 15, 1973, held that the creation of the General Braddock School District by the Pennsylvania State Board of Education was an act of de jure discrimination in violation of the fourteenth amendment.2 The defendants were ordered to prepare and submit to the court a plan for desegregation which was to include modifications in the boundary lines of the General Braddock School District and, “as appropriate, of adjacent and/or near-by school districts.”3 A plan designated as Plan “22-W” was submitted in 1973 but was rejected [1342] by the court after a hearing. Thereafter, in 1975, the Commonwealth filed a plan (Plan “A”) for the consolidation of the General Braddock School District with neighboring districts. In an opinion and order filed on November 18,1977, the district court denied the Commonwealth’s motion for approval of Plan A. The district court’s order reads as follows:
And Now, November 18, 1977 the Motion of Defendant Commonwealth of Pennsylvania for approval of its Reorganization Plan [Plan A] filed September 30,1975 in this matter (Docket No. 178) is hereby Denied and any necessary injunc-tive order to implement such plan is likewise Denied, without prejudice to the right of any party to submit further plans or proposals and evidence in support thereof. Any such plan involving the joinder or consolidation of school districts not now parties of record must be accompanied by the necessary joinder of such parties.
Because we hold that the district court’s order of November 18, 1977 is neither a final order nor an appealable interlocutory order which can vest this Court with appellate jurisdiction, we are obliged to dismiss plaintiffs’ appeal.
I.
Prior to 1971, the area presently included in the General Braddock School District was served by the school districts of the Boroughs of Braddock, North Braddock and Rankin.4 In 1968, the Pennsylvania legislature, pursuant to its longstanding policy of consolidating school districts, enacted Pub.L. 299, No. 150, Pa.Stat.Ann. tit. 24, § 2400.1 et seq. (Purdon Supp.1978) (“Act 150”), which directed the county school boards to prepare and submit to the state board of education plans for the reorganization of their constituent school districts.5 The state board promulgated standards for the approval of such plans.6 The standards provided for consideration of, inter alia, pupil population, community characteristics, and facilities; however, race was not to be a factor in the formulation of any plan.7
After considering plans which would have consolidated the schools in the Boroughs of Braddock, North Braddock and Rankin with the school districts in neighboring municipalities which have predominantly white enrollments,8 the county board, on October 7, 1968, approved a plan which created the General Braddock School District as the school system for the three boroughs. The adjacent Turtle Creek and Swissvale Area School Districts and the nearby Edgewood School District were created under that plan as well. The state board approved the formation of the General Braddock School District on May 9, 1969, and the new district came into being on July 1, 1971.9
On June 9, 1971, the plaintiffs’ complaint in this action was filed. As thereafter amended, it alleged two causes of action under the equal protection clause of the fourteenth amendment and under 42 U.S.C. §§ 1981,1983 (1970). In Count I, the plaintiffs alleged that the defendants, the Pennsylvania State Board of Education and the Allegheny Intermediate Unit Board of School Directors,10 had intentionally and [1343] knowingly established the boundary lines of the General Braddock School District so as to create a racially segregated district. Count II alleged that the school district so established lacked the economic resources to provide educational opportunities comparable to those available to pupils attending public schools in the surrounding districts. After trial, the district court filed an opinion and order on May 15, 1973, in which, after recording its findings of fact and conclusions of law, it held that the demarcation of the boundaries of the General Braddock School District by the county and state boards was “an act of de jure discrimination in violation of the Fourteenth Amendment.” 11
The district court found that the percentage of non-white enrollment was “much greater” in the General Braddock School District than in any of the surrounding districts or in almost any other district in Allegheny County.12 It further found that the school-age population of Braddock, North Braddock and Rankin was becoming increasingly non-white and that this trend had been accelerated by the establishment of the General Braddock School District.13 It was the court’s conclusion that the defendants knew or should have been aware of these facts in 1968-1969, and that they must have known that the establishment of General Braddock as a school district would “perpetuate, exacerbate and maximize segregation of school pupils.” 14 The district court found that the board’s purpose in forming the General Braddock School District was not to further any educational goals but was “to satisfy the desires of as many of the surrounding municipalities as possible to be placed in a school district which did not include Braddock and Rankin.” 15 The district court, after finding that the school district boundaries in the central eastern area of Allegheny County bore no rational relation to any legitimate purpose, thereupon concluded that “race was a factor, at least indirectly, in the formation of the school district composed of Braddock, North Braddock and Rankin.”16
[1344] In the Order which was also filed on May 15, 1973,17 the district court required the defendants Commonwealth of Pennsylvania, the state board and its chairman (“the Commonwealth defendants”) to submit within forty-five days a comprehensive plan for school desegregation in the central eastern area of Allegheny County. The court directed that the plan was to go into effect as soon as possible and that it was to be an educationally sound and practicable mode of achieving the greatest possible degree of desegregation. The order also required that the plan “alter the boundary lines of the General Braddock Area School District and, as appropriate, of adjacent and/or near-by school districts.”18
Approximately one month after the May 15, 1973 Order had been entered and two years after the action had been commenced, two of the districts adjacent to the General Braddock district, Turtle Creek and Churchill, filed petitions to intervene as parties in interest. The district court denied the petitions but subsequently invited all districts (including Turtle Creek and Churchill) which would be directly affected by the Commonwealth’s desegregation plans to intervene for the limited purpose of offering objections to those plans.19 Turtle Creek and Churchill again sought to intervene generally (as distinct from the limited intervention allowed by the court).20 Their peti[1345] tions were denied, and each filed an appeal. This Court affirmed the district court’s orders denying general intervention on the ground that, under NAACP v. New York,21 it was within the district court’s discretion to deny petitions which had not been timely made.22
In-compliance with the court’s May 15, 1973 order,23 the Commonwealth defendants filed Plan “22-W” in September, 1973. That plan, among other features, would have abolished the General Braddock School District and created two new school districts. One district would have included the Borough of Rankin with other districts with predominantly white enrollments, and the other new district would have included the Braddock and North Braddock schools with still other surrounding districts. The school districts affected by this plan were permitted to intervene to offer evidence regarding Plan 22-W.24 In an order and memorandum opinion filed on May 7, 1975, the district court, after holding extensive hearings,25 rejected Plan 22 — W. The defendants were then ordered to prepare another plan which would comport with the evidence adduced at the hearing by the parties and the intervening school districts.26
Thereafter, in September, 1975, the Commonwealth defendants submitted “Plan A”. Although, in the opinion of the district court, Plan A constituted a “more moderate realignment” of school district boundaries,27 the district court nonetheless denied the defendants’ motion for approval of the plan. In its opinion of November 18, 1977, the district court concluded that the plan “would not be in the best interests of the [1346] students in the present General Braddock area school system.”
The district court also questioned whether, under Milliken v. Bradley,28 it had the power to order the proposed relief. The district court expressed its belief that Mil-liken “raises doubts about the application of an inter-district remedy to districts that have not been full participants in all proceedings.” Accordingly, the district court required, in its order, that any school district included in a desegregation plan be joined as a necessary party.
The Order filed on November 18, 1977 thereupon denied the defendants’ motion for approval of Plan A. It further denied “any necessary injunctive order to implement such plan . . . without prejudice to the right of any party to submit further plans or proposals and evidence in support thereof.” It was from this order that the plaintiffs appealed.29
II.
The jurisdiction of the courts of appeals normally is confined to the review of final orders, 28 U.S.C. § 1291 (1976)30 or to the classes of interlocutory orders described in 28 U.S.C. § 1292(a) (1976).31 Here, the plaintiffs have taken the position that the November 18, 1977 Order is either “final” within the meaning of § 1291, or that it comes within § 1292(a)(1) which permits appeals from certain types of injunctive orders.
A.
The plaintiffs argue that an order denying a motion for the approval of a desegregation plan should be regarded as final within the meaning of 28 U.S.C. § 1291 (1976). In support of this proposition they rely primarily on Kelley v. Metropolitan County Board of Education, 436 F.2d 856 (6th Cir. 1970). In that case, it was determined that the schools of Nashville were subject to de jure discrimination, and the district court ordered that a desegregation plan be prepared. A plan was submitted by the school board, but before the merits of the plan had been considered by the district court, all proceedings in the case were stayed indefinitely pending decision by the Supreme Court of school desegregation cases then before it. The Court of Appeals for the Sixth Circuit ruled that an order “staying pupil integration proceedings for an indefinite time was final and is appealable under 28 U.S.C. § 1291,” and vacated the stay.32 The court relied on the admonition of the Supreme Court that in cases which fall into the “ ‘twilight zone’ of finality,” the final judgment rule should be given a “ ‘practical rather than technical construction.’ ”33
While we do not rule that there could never be circumstances in which an order which stayed all proceedings in a school desegregation case would be a “final” denial of relief, we are faced here with circumstances which are far different from those which confronted the Sixth Circuit in Kel[1347] ley. Kelley, it has been noted, involved an appeal from an order which stayed all proceedings for an indefinite time. In the present case, no stay has been decreed. However, we do not hold that the presence or absence of a final order turns on whether there has been a formal order staying the proceedings. Rather, we observe that in Kelley the district court stayed the proceedings before any consideration had been given to the remedial plan before it. By contrast, here the district court has given full consideration to the plan and rejected it on the merits. The November 18, 1977 Order entered in this case interposes no bar to further proposals for relief. Moreover, that order, by its terms, does not require that there be any more delay than may be necessary for the parties to prepare an appropriate plan.34
In these circumstances, for us to hold that the district court’s order of November 18, 1977 is a “final decision” would not be consistent with “our circuit’s disinclination to expand the class of appealable final orders.”35 This circuit has adhered to the position that “expansive judge-made exceptions to the final judgment rule” do not, in the long run, serve the goal of speedy justice.36 To the extent that orders which are not final may be reviewed, 28 U.S.C. § 1292(b) (1976)37 provides the appropriate procedure.38
Although the prospect that delay may impair important federal rights bears consideration in an appeal from an order which is in the “twilight zone” of the final judgment rule,39 “the mere prospect of delay” may not create appellate jurisdiction where a final order has not been entered. Brace v. O’Neill, 567 F.2d 237, 243 n.27a (3d Cir. 1977). To place such a gloss on the final judgment rule in order to bring within its ambit cases in which the district court has failed to bring the litigation to an expeditious conclusion would, as Judge Adams has noted in his opinion for the court in Bachowski v. Usery,40 be a disservice to the [1348] important systemic concerns on which that rule is premised.
B.
Recognizing that the November 18, 1977 order is interlocutory, we would nevertheless have appellate jurisdiction under 28 U.S.C. § 1292(a)(1) (1976) if that order was injunctive in character.41 The plaintiffs have so argued, contending that our jurisdiction attaches because the November 18, 1977 order modifies the order of May 15, 1973, which the plaintiffs characterize as an injunction.42
For an interlocutory order to be appealable under 28 U.S.C. § 1292(a)(1) (1976) as an order modifying an injunction, two requirements appear to be necessary and must be satisfied: (i) the original or prior order must have been injunctive in character, and (ii) that injunction must have been modified in some respect by the order from which the appeal has been taken. Neither requirement has been met here.
The only injunctive aspect of the May 15, 1973 order which later orders might conceivably have been deemed to have modified was its requirement that the Commonwealth defendants prepare and submit a plan for desegregation.43 Whether an order which merely commands the preparation of [1349] a remedial plan constitutes an injunction within the meaning of § 1292(a)(1) presents a question which this Court has previously answered in Frederick L. v. Thomas, 557 F.2d 373 (3d Cir. 1977). In that case, the district court ordered the School District of Philadelphia to prepare and submit to a master a plan (i) for the identification of all “learning disabled” students, and (ii) for the appropriate placement of those students. This Court held that it had jurisdiction under § 1292(a)(1) of the school district’s appeal, but only from the first (“identification”) portion of the order. Consideration of the balance of the district court’s order which concerned the interim and final plans for placement of students was held to be premature.44 In his opinion for the court, Judge Adams reviewed decisions from other circuits addressing the issue which was presented in Frederick L. and which is also presented here, that is, whether an order to prepare a plan is an injunction under section 1292(a)(1). His analysis revealed substantial differences in the content of those orders which were held to be appealable and those which were not. He concluded that the controlling factor was whether the order specified the nature, requirements and extent of the relief to be afforded by the plan to be submitted.45
In his discussion of Board of Public Instruction v. Braxton;46 a Fifth Circuit desegregation ease, Judge Adams characterized the order which Braxton held to be ap-pealable as one which dealt with “specific prohibited acts.” 47 He noted that the court of appeals, which held this order to be reviewable under 28 U.S.C. § 1292(a)(1) (1976) had ruled that the “ordering of the plan dealing expressly with these prohibited acts amounts to a mandatory injunction.”48 In Board of Education v. Dowell49 another school desegregation case to which Judge Adams cited, the court held that it had jurisdiction of an appeal from an order requiring the defendants to submit a desegregation plan substantially identical to one which had previously been prepared for the court by a panel of experts.50 Hence, the crucial element on which jurisdiction was predicated in both Braxton and Dowell was that the order from which appeal was taken specified the overall content or outline of the plan to be submitted.
On the other hand, Judge Adams observed that cases in the Second and Sixth Circuits in which appeals were dismissed for lack of jurisdiction involved orders which did not specify the nature or extent of the relief which the plans would afford. Hart v. Community School Board, 497 F.2d 1027 (2d Cir. 1974); Taylor v. Board of Education, 288 F.2d 600 (2d Cir. 1961); Bradley v. Milliken, 468 F.2d 902 (6th Cir. 1972), cert. denied, 409 U.S. 844, 93 S.Ct. 45, 34 L.Ed.2d 83 (1972). For instance, in Hart, the district court ordered that a desegregation plan be submitted. The order provided little guidance regarding the content of the plan to be prepared, merely requiring that it include the “six basic elements in successful school integration.”51 After plans had been submitted, the district court judge “criticized” them and then postponed imple[1350] mentation of his desegregation order for one year so that there would be sufficient time in which to frame appropriate relief. The court of appeals in an opinion by Judge Friendly held that it did not have jurisdiction, “since the judge had neither entered a final judgment nor issued an injunction.” In so holding, the court reiterated its ruling in Taylor v. Board of Education :
We there held that when a district court has simply found segregation by a school board to be unconstitutional and has directed the board promptly to submit a plan for ending it, without any “injunction” other than the direction to file the plan, the decision is not appeala-ble at that time.52
Frederick L. did not diverge from the instruction which Judge Adams discerned in the case law of other circuits. The portion of the Frederick L. order requiring the identification of learning disabled children was held to be appealable under 28 U.S.C. § 1292(a)(1) (1976), because whatever remedial order was ultimately entered, it could not affect the extent or nature to which learning disabled children were identified. The district court had “clearly ordered that all learning disabled children be identified,” and only the mode for accomplishing that concrete result remained at issue.53 Therefore, as Judge Adams pointed out, deferring review of that issue would not alter the appellate perspective. On the other hand, the court declined to hear the appeal from those portions of the order which required the submission of a plan for the placement of all learning disabled children and which denied the school district’s request for an order compelling state financial assistance. Jurisdiction was lacking as to those issues, because “the scope and content of the educational plan that the district court approves may very well alter our perspective and could change the legal issues that are presented.” 54
The construction given to 28 U.S.C. § 1292(a)(1) (1976) in Frederick L. is grounded on a well-reasoned elaboration of the policies which underlie that statute. In a case in which the district court has, in its order, determined the nature and extent of the injunctive relief which the final decree will grant, all that remains for the parties is to propose the mechanics for the implementation of that relief. The issues in such a case are ready for appellate consideration, because the precise plan which ultimately will be adopted by the district court will do no more than determine how the injunctive relief will be accomplished as contrasted with the nature and extent of that relief.55 Therefore, any actions that may thereafter be taken by the district court will not change or affect the legal issues raised by the appeal. In the case now before us, the order entered on May 15, 1973 did not determine the nature, requirements, scope or extent of the relief which the final decree will embody. The guidelines supplied by the district court for the defendants to follow in preparing the plan were mere generalities. Aside from the requirement that the plan alter the boundaries of General Braddock School District, the May 15, 1973 order is no different and no more specific than the order in Taylor v. Board of Education. Judge Adams distinguished the order in Taylor from those orders which are ap-pealable as of right under § 1292(a)(1) by saying:
Taylor, in our view, is not at odds with our decision. Unlike the situation in that case, delaying the day for appellate review here will not clarify the questions on appeal. In Taylor the exact desegregation plans offered by the school board and ultimately to be adopted by the school district had the potential to alter in a material manner the issues that would be presented to the court of appeals. The determination that desegregation was necessary and that a remedial plan must [1351] be submitted provided only a skeletal outline for later adjudication.56
Under Frederick L. v. Thomas, the order of May 15, 1973 cannot be regarded as an injunction which would support appellate jurisdiction under 28 U.S.C. § 1292(a)(1) (1976). Rather, it is merely a step in a judicial proceeding leading to the formulation of such relief. Important issues regarding the nature and extent of the relief to be afforded the plaintiffs still remained to be resolved and were dependent on the particular circumstances of the case as it was to develop in the proceedings subsequent to the entry of that order. Hence, an appeal from the May 15, 1973 order could not vest jurisdiction in a reviewing court because the “appellate perspective” remained subject to alteration until the particulars of the remedy had been formulated. Having concluded that the May 15, 1973 order was not an injunction, it is clear that appellate jurisdiction cannot be predicated upon the November 18, 1977 order as a “modification” of an injunction.
Even if we concluded otherwise and held that the May 15, 1973 order was an injunction, it is not evident to us in what respects it has been modified by the district court’s November 18, 1977 order — the order from which this appeal has been taken. That order does not specify the nature and scope of the desegregation remedy. Rather, it continues to look toward the future formulation of a decree which will afford the plaintiffs the relief to which they are entitled under the district court’s original order. The November, 1977 order differs in but one respect from the previous orders entered in this case. Whereas the prior orders required the defendants to prepare a plan, the November, 1977 order invites “any party” to submit a plan. Even if it might be argued that the May 15, 1973 order constituted an injunction which, if modified, would support appellate jurisdiction, the fact remains that the defendants discharged their obligation when they submitted Plan A in September, 1975. Thus, having complied with the May 15, 1973 order, there was no longer any continuing obligation on the defendants which could be modified. Whether the court in its November 18, 1977 order should have imposed a new obligation on the defendants to prepare a plan is a matter pertaining to the merits of this appeal rather than a matter concerning the presence or absence of a modification of the earlier order.
Having concluded that the November 18, 1977 order is not appealable, we have no jurisdiction to review it and thus must dismiss the plaintiffs’ appeal. We are confident that, in light of the long history of this litigation and the sensitive, constitutional nature of the relief sought, the district court will require submission of a plan forthwith and certainly within the time limits of its original order,57 will expedite all further proceedings, and will give priority on its calendar to consideration and implementation of the plan. This being so, it would appear that an appropriate final order can be entered by year end which will grant plaintiffs the relief to which they are entitled under the district court’s order of May 15, 1973.
The appeal will be dismissed.
Population in 1970 Black Total Black
Braddock 3139 8682 36.16
North Braddock 1194 10838 11.02
Rankin 1351 3817 35.39
Chalfont 12 1370 .88
Churchill 5 4690 .11
East McKeesport 26 3233 .80
Braddock Hill 293 2494 11.75
East Pittsburgh 116 3006 3.85
Population in 1970 % Black Total Black
Edgewood 66 5101 1.29
Forest Hills 26 9561 .27
North Versailles 1025 13416 7.64
Swissvale 567 13891 4.10
Turtle Creek 15 8308 .18
Wall 32 1265 2.53
Wilkins 49 8479 .56
Wilmerding 94 3218 2.92
And now, this 15th day of May, 1973, this Court having found that the County and State Boards acted contrary to the Constitution in adopting the plan of organization of administrative units which combined Braddock, North Braddock and Rankin into a single school district, it is hereby ordered and directed that:
(1) Defendants Commonwealth of Pennsylvania, The Pennsylvania State Board of Education, and W. Deming Lewis shall prepare and submit to this Court within 45 days from the date of this Order a comprehensive plan of school desegregation for the central eastern area of Allegheny County to remedy the Constitutional violations found by this Court, which plan shall become final unless objected to by plaintiffs within 20 days after it is filed with the Court.
(2) Such plan shall meet the following standards:
(a) the plan shall alter the boundary lines of the General Braddock Area School District and, as appropriate, of adjacent and/or nearby school districts.
(b) the plan shall be an educationally sound and practical plan of desegregation that promises now and hereafter to achieve the greatest possible degree of desegregation within the public schools of the central eastern area of Allegheny County, taking into account the practicalities of the situation.
(c) the plan shall set forth the dates on which it shall go into effect, which dates shall be set as early as possible.
(3) Defendants Allegheny Intermediate Unit Board of School Directors, and Edward Hallenberg, its President, shall assist in the preparation of the plan in all respects within their special area of responsibility and to the fullest extent render the benefits of their expertise and knowledge of local facilities and resources so that the terms of this order may be carried out by the other Defendants.
(4) In preparing said desegregation plan it is anticipated that defendants will consider the factor of racial balance along with other educationally relevant criteria and that the plan submitted by defendants will be consistent with the policies of the Department of Public Instruction and Human Relations of Pennsylvania relating to school integration.
(5) Defendants shall give each school district whose boundaries may be altered by said school desegregation plan the opportunity to be heard prior to the adoption of a final plan.
(6) Until said school desegregation plan is finally approved by this Court, defendants are hereby enjoined and restrained from taking any action, directly or indirectly, that may in any way limit or otherwise affect any school assignment options that could possibly be considered or proposed by any parties to this action.
(7) This Court expressly retains complete and continuing jurisdiction to modify this final judgment and decree on its own motion or on motion of any party.
(8) This judgment and decree shall take effect immediately.
359 F.Supp. at 824-25.
The district court rejected the defendants’ Fed.R.Civ.P. 19 motion in its opinion of May 15, 1973, noting that the surrounding districts had no right to their present boundaries. 359 F.Supp. at 821-22. The district court also recognized that, although each of the districts deemed to be necessary parties by the defendants had been made aware of the instant action, none had requested intervention. However, the district court indicated that it might become necessary “at some further stage of the proceedings” to join the surrounding school districts. Id. at 822.
The denial of a motion for a preliminary injunction against further proceedings in an arbitration would seem at first blush to fall within the literal terms of § 1292(a)(1). But literalism has not been the approved canon of construction for the interlocutory appeals statute. Rather, the courts have looked to the presumed purpose of the 1891 exception to the historical rule prohibiting appeals from non-final judgments, and have classified as injunctions within the meaning of § 1292(a)(1) those interlocutory orders “of serious, perhaps irreparable consequence.” Baltimore Contractors, Inc. v. Bodinger, 348 U.S. 176, 181, 75 S.Ct. 249, 252, 99 L.Ed. 233 (1955). The literal characterization of an order as an injunction only begins the inquiry into appealability.
See also Rodgers v. United States Steel Corp., 541 F.2d 365, 372-73 (3d Cir. 1976).
The defendants’ motion of September 30, 1975 which gave rise to the November 18, 1977 order sought no more than the approval of Plan A. It did not seek any injunction to implement that plan (if approved). Hence, the inclusion in the November 18, 1977 order of the language, “and any necessary injunctive order to implement such plan is likewise denied,” was sur-plusage and, at best, incidental to the court’s refusal to approve the defendants’ plan. For once the motion for approval of that plan had been denied, there was no need or occasion for the court to go further and rule on the implementation of a plan which it had determined was not to go into effect.
Moreover, the order expressly invited “any party to submit further plans or proposals and evidence in support thereof.” Therefore, read as an integrated whole, the November 18, 1977 order necessarily leads to the conclusion that it was never intended to and did not refuse a permanent injunction within the meaning of 28 U.S.C. § 1292(a)(1) (1976). See generally 16 Wright & Miller, Federal Practice and Procedure 87 (advocating a policy of strict construction of section 1292(a)(1); Western Geophysical Co. v. Bolt Associates Inc., 463 F.2d 101, 104 (2d Cir.), cert. denied 409 U.S. 1040, 93 S.Ct. 523, 34 L.Ed.2d 489 (1972) (Section 1292(a)(1) “was intended as a narrow exception to the policy of the basic final judgment rule . . . The great advantages of that policy in the administration of federal justice dictate against a reliance on the strict letter of § 1292(a)(1) which would cause the exception to encroach unduly upon the rule.”).