Wiggins, J.
¶1 This case requires us to examine how our juvenile justice laws interact with the Persistent Offender Accountability Act (POAA) of the Sentencing Reform Act of 1981, chapter 9.94A RCW, also known as the “three strikes law.” When Jorge Saenz was 15 years old, he agreed to waive juvenile court jurisdiction and transfer his case to adult court, where he pleaded guilty to two counts of felony assault in exchange for a moderately lower sentencing recommendation. As a result, seven years later he faces life in prison without the possibility of parole under the POAA. We now examine whether his waiver of juvenile court jurisdiction was valid and whether his case was properly transferred to adult court. We conclude first that Saenz’s waiver was invalid because there is virtually nothing in the record demonstrating that it was intelligently made or that Saenz was fully informed when he made it. Next, we hold that Saenz’s case was not properly transferred to adult court because the commissioner transferring the case failed to enter findings that transfer was in the best interest of the juvenile or the public as required by statute. On these facts, we hold that Saenz’s conviction cannot be used as a “strike” to sentence him to spend the rest of his life in prison with no possibility of release, the second harshest sanction in our criminal justice system. Instead, we affirm the 561-month sentence imposed by the trial court.
FACTS
¶2 In 2008, Saenz was convicted by a jury of two counts of first degree assault and one count of unlawful possession of a firearm. He was accused of shooting two members of a rival gang in Sunnyside, Washington, in January 2008. After the jury reached its verdict, the State sought to sentence Saenz under the POAA. See RCW 9.94A.570. [171]*171Saenz had two prior convictions that were potentially strikes, both gang-related assault convictions. One of them was the 2001 guilty plea to assault when Saenz was only 15 years old.
¶3 At his “three strikes” hearing, Saenz argued that his 2001 conviction could not be used as a strike. He argued that there were two defects in the transfer of his case from juvenile to adult court precluding the conviction from being used against him under the POAA: (1) there was no decline hearing and he did not knowingly and intelligently waive his decline hearing or juvenile court jurisdiction and (2) the juvenile court did not enter findings that declining juvenile jurisdiction was in the best interest of Saenz or the public as required by former RCW 13.40.110(2) and (3) (1997).
¶4 For Saenz’s 2001 conviction, the juvenile court did not hold a decline hearing before transferring the case to adult court. Saenz stipulated to a waiver of his hearing and to transfer to adult court as part of a plea bargain that dropped multiple charges and reduced the length of his sentence. However, the record for the 2001 conviction contained very little evidence that the waiver was made knowingly and intelligently, only a statement by Saenz’s attorney that “Mr. Saenz and I had two conversations, one at length here, and two this afternoon. I believe that he understands what the implications are of having this moved to adult court, but that is his desire at this time.” Clerk’s Papers at 116.
¶5 Nevertheless, a juvenile court commissioner accepted the stipulation and transferred the case to adult court where Saenz pleaded guilty to second degree assault and custodial assault 10 days later. His guilty plea contained an acknowledgement that Saenz’s offense was a potential strike offense, and Saenz checked a box on the guilty plea that said he had read the plea and understood it.
¶6 The trial court ruled that in these circumstances the 2001 conviction could not be used as a strike, sentencing Saenz to 561 months in prison instead of the State’s [172]*172requested sentence of life without possibility of parole. The Court of Appeals reversed and remanded for resentencing as a persistent offender. State v. Saenz, 156 Wn. App. 866, 878-79, 234 P.3d 336 (2010). We granted review. 170 Wn.2d 1013, 245 P.3d 775 (2010).
ANALYSIS
I. Standard of Review
¶7 The prosecution bears the burden of proving by a preponderance of the evidence that a conviction can be used as a strike under the POAA, and we review a trial court’s determination de novo. State v. Knippling, 166 Wn.2d 93, 98, 100-01, 206 P.3d 332 (2009).
II. Overview of the Juvenile Justice System
¶8 The magnitude of Saenz’s decision to be tried as an adult is best understood by examining the history of and policy behind the juvenile justice system. In 1905, Washington enacted legislation establishing juvenile courts in response to a wider reform movement focused on treating and rehabilitating juveniles instead of subjecting them to the harsh procedures, penalties, and jail conditions of adult courts. State v. Rice, 98 Wn.2d 384, 389, 655 P.2d 1145 (1982). In Washington’s new juvenile courts, “ ‘[t]he idea of crime and punishment was to be abandoned. The child was to be “treated” and “rehabilitated” and the procedures, from apprehension through institutionalization, were to be “clinical” rather than punitive.’ ” Id. (quoting In re Gault, 387 U.S. 1, 15-16, 87 S. Ct. 1428, 18 L. Ed. 2d 527 (1967)).
¶9 Despite these early goals, as juvenile crime rates rose the failings of a wholly rehabilitative system became apparent, leading to Washington’s adoption of the Juvenile Justice Act of 1977, chapter 13.40 RCW. The act departed from the old view of the juvenile courts as rehabilitators and service providers in favor of a new view that saw them, at least in part, as instruments for administering justice in [173]*173light of the realities of juvenile criminality. Despite the act’s shift, the legislature still intended to foster “a system capable of having primary responsibility for, being accountable for, and responding to the needs of youthful offenders ...” RCW 13.40.010(2) (emphasis added). Thus, although the act made juvenile courts more punitive, it preserved the fundamental difference between juvenile courts and adult courts — unlike wholly punitive adult courts, juvenile courts remained rehabilitative.
¶10 This fundamental difference is manifest in the additional protections juveniles receive in juvenile court but not in adult court. Most pertinent here, juvenile offenses do not count as strikes under the POAA. RCW 9.94A.030(37), (34). There are numerous other protections as well. For example, juvenile courts have far more discretion to order alternative sentences, such as diversion agreements in lieu of prosecution, community supervision, and individualized programs involving employment, education, or treatment. See, e.g.,
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Wiggins, J.
¶1 This case requires us to examine how our juvenile justice laws interact with the Persistent Offender Accountability Act (POAA) of the Sentencing Reform Act of 1981, chapter 9.94A RCW, also known as the “three strikes law.” When Jorge Saenz was 15 years old, he agreed to waive juvenile court jurisdiction and transfer his case to adult court, where he pleaded guilty to two counts of felony assault in exchange for a moderately lower sentencing recommendation. As a result, seven years later he faces life in prison without the possibility of parole under the POAA. We now examine whether his waiver of juvenile court jurisdiction was valid and whether his case was properly transferred to adult court. We conclude first that Saenz’s waiver was invalid because there is virtually nothing in the record demonstrating that it was intelligently made or that Saenz was fully informed when he made it. Next, we hold that Saenz’s case was not properly transferred to adult court because the commissioner transferring the case failed to enter findings that transfer was in the best interest of the juvenile or the public as required by statute. On these facts, we hold that Saenz’s conviction cannot be used as a “strike” to sentence him to spend the rest of his life in prison with no possibility of release, the second harshest sanction in our criminal justice system. Instead, we affirm the 561-month sentence imposed by the trial court.
FACTS
¶2 In 2008, Saenz was convicted by a jury of two counts of first degree assault and one count of unlawful possession of a firearm. He was accused of shooting two members of a rival gang in Sunnyside, Washington, in January 2008. After the jury reached its verdict, the State sought to sentence Saenz under the POAA. See RCW 9.94A.570. [171]*171Saenz had two prior convictions that were potentially strikes, both gang-related assault convictions. One of them was the 2001 guilty plea to assault when Saenz was only 15 years old.
¶3 At his “three strikes” hearing, Saenz argued that his 2001 conviction could not be used as a strike. He argued that there were two defects in the transfer of his case from juvenile to adult court precluding the conviction from being used against him under the POAA: (1) there was no decline hearing and he did not knowingly and intelligently waive his decline hearing or juvenile court jurisdiction and (2) the juvenile court did not enter findings that declining juvenile jurisdiction was in the best interest of Saenz or the public as required by former RCW 13.40.110(2) and (3) (1997).
¶4 For Saenz’s 2001 conviction, the juvenile court did not hold a decline hearing before transferring the case to adult court. Saenz stipulated to a waiver of his hearing and to transfer to adult court as part of a plea bargain that dropped multiple charges and reduced the length of his sentence. However, the record for the 2001 conviction contained very little evidence that the waiver was made knowingly and intelligently, only a statement by Saenz’s attorney that “Mr. Saenz and I had two conversations, one at length here, and two this afternoon. I believe that he understands what the implications are of having this moved to adult court, but that is his desire at this time.” Clerk’s Papers at 116.
¶5 Nevertheless, a juvenile court commissioner accepted the stipulation and transferred the case to adult court where Saenz pleaded guilty to second degree assault and custodial assault 10 days later. His guilty plea contained an acknowledgement that Saenz’s offense was a potential strike offense, and Saenz checked a box on the guilty plea that said he had read the plea and understood it.
¶6 The trial court ruled that in these circumstances the 2001 conviction could not be used as a strike, sentencing Saenz to 561 months in prison instead of the State’s [172]*172requested sentence of life without possibility of parole. The Court of Appeals reversed and remanded for resentencing as a persistent offender. State v. Saenz, 156 Wn. App. 866, 878-79, 234 P.3d 336 (2010). We granted review. 170 Wn.2d 1013, 245 P.3d 775 (2010).
ANALYSIS
I. Standard of Review
¶7 The prosecution bears the burden of proving by a preponderance of the evidence that a conviction can be used as a strike under the POAA, and we review a trial court’s determination de novo. State v. Knippling, 166 Wn.2d 93, 98, 100-01, 206 P.3d 332 (2009).
II. Overview of the Juvenile Justice System
¶8 The magnitude of Saenz’s decision to be tried as an adult is best understood by examining the history of and policy behind the juvenile justice system. In 1905, Washington enacted legislation establishing juvenile courts in response to a wider reform movement focused on treating and rehabilitating juveniles instead of subjecting them to the harsh procedures, penalties, and jail conditions of adult courts. State v. Rice, 98 Wn.2d 384, 389, 655 P.2d 1145 (1982). In Washington’s new juvenile courts, “ ‘[t]he idea of crime and punishment was to be abandoned. The child was to be “treated” and “rehabilitated” and the procedures, from apprehension through institutionalization, were to be “clinical” rather than punitive.’ ” Id. (quoting In re Gault, 387 U.S. 1, 15-16, 87 S. Ct. 1428, 18 L. Ed. 2d 527 (1967)).
¶9 Despite these early goals, as juvenile crime rates rose the failings of a wholly rehabilitative system became apparent, leading to Washington’s adoption of the Juvenile Justice Act of 1977, chapter 13.40 RCW. The act departed from the old view of the juvenile courts as rehabilitators and service providers in favor of a new view that saw them, at least in part, as instruments for administering justice in [173]*173light of the realities of juvenile criminality. Despite the act’s shift, the legislature still intended to foster “a system capable of having primary responsibility for, being accountable for, and responding to the needs of youthful offenders ...” RCW 13.40.010(2) (emphasis added). Thus, although the act made juvenile courts more punitive, it preserved the fundamental difference between juvenile courts and adult courts — unlike wholly punitive adult courts, juvenile courts remained rehabilitative.
¶10 This fundamental difference is manifest in the additional protections juveniles receive in juvenile court but not in adult court. Most pertinent here, juvenile offenses do not count as strikes under the POAA. RCW 9.94A.030(37), (34). There are numerous other protections as well. For example, juvenile courts have far more discretion to order alternative sentences, such as diversion agreements in lieu of prosecution, community supervision, and individualized programs involving employment, education, or treatment. See, e.g., RCW 13.40.080, .0357 (“Option B, Suspended Disposition Alternative”), .020(4). In juvenile court, convicted offenders cannot be confined past the age of 21. RCW 13.40.300. Juvenile offenses are not generally considered crimes, so a juvenile cannot be convicted of a felony. RCW 13.04.240; In re Pers. Restraint of Frederick, 93 Wn.2d 28, 30, 604 P.2d 953 (1980). A juvenile cannot be sent to adult prison, or to any adult jail or holding facility. RCW 13.04.116. There are limitations on the use of juvenile records and the length of time they will be made public. See RCW 13.50.050. Juvenile courts can consider mitigating factors at disposition hearings, RCW 13.40.150(3)(h), and can impose sentences outside standard sentencing ranges to prevent “manifest injustice.” RCW 13.40.160(2). .
¶11 Ordinarily, juvenile offenders are guaranteed these increased protections because juvenile courts have automatic, statutorily granted jurisdiction over any person [174]*174under 18 who is charged with a crime.1 RCW 13.04.030. However, the defendant, the State, or the juvenile court can request that the case be transferred to adult court after a decline hearing. RCW 13.04.030(l)(e)(i). At the decline hearing, the court must consider eight factors set forth in Kent v. United States to decide whether to decline jurisdiction. 383 U.S. 541, 86 S. Ct. 1045, 16 L. Ed. 2d 84 (1966);2 State v. Holland, 98 Wn.2d 507, 515, 656 P.2d 1056 (1983).
¶12 When a juvenile waives juvenile court jurisdiction he or she also waives the increased protections of the juvenile justice system, exiting a system designed to rehabilitate and entering a system designed to punish. This exit is a one-way street with no return: by waiving juvenile jurisdiction once, the juvenile enters the adult system permanently, forfeiting the right to be tried in juvenile court for all future offenses. RCW 13.40.020(14); State v. Sharon, 100 Wn.2d 230, 231, 668 P.2d 584 (1983). Thus, moving a case from juvenile court to adult court is “a ‘critically important’ action determining vitally important statutory rights of the juvenile.” Kent, 383 U.S. at 556 (citing Black v. United States, 122 U.S. App. D.C. 393, 355 F.2d 104, 105 (1965)).
¶13 The critical importance of transferring a juvenile to adult court prompted our legislature to include statutory protections before the transfer can be made. First, [175]*175like the waiver of any right in juvenile court, a juvenile’s waiver of juvenile court jurisdiction and a decline hearing must be an “express waiver intelligently made by the juvenile after the juvenile has been fully informed of the right being waived.” RCW 13.40.140(9). Second, after a decline hearing but before transferring a case to adult court, juvenile courts must enter findings in the record, including a finding that transfer to adult court is in the best interest of the juvenile or the public. Former RCW 13.40-.110(2), (3).3 Only then can the juvenile court properly transfer the case to adult court. Id.
III. Juveniles’ Adult Court Convictions under the POAA
¶14 Compliance with the requirements for declining juvenile jurisdiction becomes important here because a juvenile’s conviction in adult court can be used as a strike under the POAA only if the State shows that transfer to adult court was proper. Knippling, 166 Wn.2d at 101-02. This showing is required because an offense counts as a strike under the POAA only if it was committed by an “offender.” A juvenile can be an offender only if he or she “committed a felony” and the “case is under [adult] jurisdiction under RCW 13.04.030 or has been transferred by the appropriate juvenile court to a criminal court pursuant to RCW 13.40-.110.” Former RCW 9.94A.030(31) (2006).4 Thus, the State must show that the statutory prerequisites to transfer were met before the conviction can be used as a strike. Here, that means showing that either there was a decline hearing or the hearing was properly waived5 and the juvenile court [176]*176entered written findings that transfer of the case was in either Saenz’s or the public’s best interest. Former RCW 13.40.110(2), (3).
¶15 Knippling controls our analysis. In Knippling, the State relied on the defendant’s prior conviction as a juvenile in adult court in seeking a persistent offender sentence. 166 Wn.2d at 97. The defendant had been charged with first degree robbery when he was a juvenile, a charge automatically filed in adult court. Id.; former RCW 13.04-.030(1)(e)(v)(C) (1997). The defendant pleaded down to second degree robbery, a charge over which the juvenile court had jurisdiction and for which a decline hearing is required before transfer to adult court. Knippling, 166 Wn.2d at 97; former RCW 13.40.110(1)(a). There was no decline hearing, but the defendant was nevertheless convicted in adult court. Knippling, 166 Wn.2d at 96, 102. We held that the defendant’s conviction could not be a strike under the POAA because, where the juvenile court failed to follow the statutory transfer procedures, the State could not show the defendant was convicted as an “offender” in adult court as required by former RCW 9.94A.030(31). Id. at 101-02.
¶16 Just as i nKnippling, here the juvenile court failed to hold the mandatory decline hearing, nor was the hearing validly waived. Equally problematic, the juvenile court commissioner in Saenz’s case did not enter written findings that decline was in the best interest of either Saenz or the public. These statutory defects are just as fatal as the defect in Knippling.
IV. Inadequate Record of Saenz’s Waiver
¶17 A waiver of any right in juvenile court must be an “express waiver intelligently made by the juvenile after the [177]*177juvenile has been fully informed of the right being waived.” RCW 13.40.140(9).
¶18 Here, we have no way of knowing whether Saenz’s waiver of juvenile court jurisdiction and his decline hearing was knowingly and intelligently made. There is simply nothing in the record that shows Saenz understood the serious implications of having his case transferred to adult court. Although Saenz’s attorney stated that she had at least “two conversations” with Saenz about the waiver, the record does not indicate what was discussed in those extrajudicial conversations, whether Saenz was “intelligently” waiving his rights, or whether he had been “fully informed of the right being waived” as required by RCW 13.40.140(9). Saenz had never been in adult court, and nothing in the record shows he understood the important protections he was waiving or that his adult conviction could be used as a strike to sentence him to life imprisonment without possibility of parole. The record does not suggest that Saenz realized he was departing the rehabilitative juvenile justice system forever in favor of the more punitive adult system.
¶19 We also reject the State’s argument that we can be sure Saenz understood his rights because he checked a box on a guilty plea. The State’s argument is based on the fact that 10 days after his juvenile court hearing, in adult court, Saenz checked a box on his guilty plea indicating that he understood the rights he was waiving by taking the plea. By checking this box, Saenz possibly indicated that he had read his plea and understood it when he signed the guilty plea. And he possibly indicated that he understood the rights he was giving up in adult court. But Saenz’s acknowledgement that he read his guilty plea has no bearing on whether he understood his entirely separate waiver of rights in juvenile court. The guilty plea simply does not detail all the rights Saenz gave up by exiting the juvenile system, and the record contains no evidence that Saenz was ever informed of those rights.
[178]*178¶20 Without proof that Saenz had some inkling of the numerous protections he was surrendering by waiving juvenile jurisdiction and a decline hearing, his waiver cannot be considered to have been made intelligently. This holding is consistent with our previous juvenile waiver cases, including Dutil v. State, where we said that a juvenile does not need to understand the “precise legal effect” of a waiver. 93 Wn.2d 84, 90, 606 P.2d 269 (1980). We should not take this language out of context. Dutil involved juveniles waiving their right to remain silent and right to counsel; both of these rights are clearly explained through Miranda6 warnings along with the warning that anything the defendant says can be used against him or her in a court of law. Thus, in Dutil, the juveniles had already been informed not only of their rights but of the effect of waiving those rights: It is explicit in the warnings that the defendant’s statements may be used in court if the defendant chooses not to exercise the right to remain silent. Saenz’s case stands in stark contrast. Here, there is no evidence in the record that Saenz received any information about the rights he was waiving, let alone the potentially critical legal effect of the waiver. We have no way of knowing what Saenz understood about his rights. As a result, we cannot say that Saenz was “fully informed” or that his waiver was “intelligently made.”
¶21 Like the court in Knippling, the adult court here convicted Saenz in spite of the fact that juvenile court jurisdiction had not been effectively waived or declined. Under these circumstances, just like in Knippling, we cannot consider the juvenile conviction a strike under the POAA. Instead, Saenz must serve the 561-month sentence imposed by the trial court.
V. No Written Findings of the Best Interest of the Juvenile or the Public
¶22 Our juvenile justice code explicitly requires juvenile courts to enter written findings before declining juvenile [179]*179jurisdiction; these requirements are codified in former RCW 13.40.110(2) and (3):
(2) The court after a decline hearing may order the case transferred for adult criminal prosecution upon a finding that the declination would be in the best interest of the juvenile or the public. The court shall consider the relevant reports, facts, opinions, and arguments presented by the parties and their counsel.
(3) When the respondent is transferred for criminal prosecution or retained for prosecution in juvenile court, the court shall set forth in writing its finding which shall be supported by relevant facts and opinions produced at the hearing.
These requirements are mandatory. A transfer of juvenile jurisdiction to adult court is not valid until the juvenile court has fulfilled its solemn responsibility to independently determine that a decline of jurisdiction is in the best interest of the juvenile or the public and entered written findings to that effect before transferring the case. Former RCW 13.40.110(2), (3).
¶23 Even where the parties stipulate to decline juvenile jurisdiction, the statute still requires the court to enter findings, and the court cannot transfer a case to adult court until it has done so. If transfer is not in the best interest of the juvenile or the public, the juvenile cannot be transferred, despite any agreement among the parties. The State argues that there was no need for written findings since there was no hearing. We reject this argument because it ignores our juvenile justice system’s paternalistic and protective foundations. Juvenile court judges are not simply potted palms adorning the courtroom and sitting idly by while parties stipulate to critically important facts. Instead, these judges enforce a juvenile code “designed with [juveniles’] special needs and limitations in mind.” Dutil, 93 Wn.2d at 94.
¶24 It is these special needs and limitations that prompted our legislature to require juvenile court judges to independently decide whether declining juvenile court ju[180]*180risdiction is in the best interest of either the juvenile or the public and to set forth written findings supporting their decisions. These legislatively mandated requirements are not erased the moment the parties stipulate to a waiver.
¶25 This holding is consistent with other jurisdictions that have recognized the special needs of juveniles and held that juvenile courts have an independent responsibility to decide whether to decline jurisdiction regardless of any stipulation by the parties. In State ex rel. Romley v. Superior Court, the Arizona appeals court held that a juvenile court was not bound to accept the parties’ stipulation to adult court jurisdiction but that the court had a responsibility to independently determine that waiving its jurisdiction was in the best interest of the juvenile or the public. 170 Ariz. 339, 341-42, 823 P.2d 1347 (Ct. App. 1991). Similarly, in Duvall v. State, the Indiana appeals court held that the court cannot simply accept the parties’ stipulation to waiver of juvenile jurisdiction: “ [although the exclusive jurisdiction of the Juvenile Court inures to the benefit of the juvenile, it is nevertheless the court’s jurisdiction. Thus, a ‘stipulation’ or consent to waiver of juvenile jurisdiction does not relieve the Juvenile Court from its duty to independently and conscientiously determine the appropriateness of waiver.” 170 Ind. App. 473, 477, 353 N.E.2d 478 (1976). In State v. Smith, the Supreme Court of Kansas held that it was an abdication of the court’s responsibility to waive jurisdiction based only on a stipulation. 268 Kan. 222, 244-45, 993 P.2d 1213 (1999).
¶26 Similarly, we hold that under RCW 13.40.110, a judge must carefully weigh whether declining jurisdiction is in the best interest of the juvenile or the public and enter findings to that effect, even where the parties waive the decline hearing and stipulate to transfer to adult court. If the judge is unable to enter findings without a hearing, the judge should order a hearing. These are important decisions. The ramifications of waiving juvenile court jurisdiction are as numerous as they are drastic. In order to [181]*181maintain “a system capable of. . . responding to the needs of youthful offenders,” RCW 13.40.010(2), our courts must independently weigh a minor’s critical decision to waive juvenile jurisdiction.
¶27 Here, the juvenile court failed to enter findings before transferring Saenz’s case to adult court. The agreed order declining jurisdiction included only the stipulation itself and a brief statement by the court ordering the transfer from juvenile court to superior court. Because this did not meet the statutory requirement of former RCW 13.40.110(2) and (3), Saenz’s transfer to adult court was defective and his 2001 conviction in adult court cannot be used as a strike under the POAA.
CONCLUSION
¶28 We reverse the Court of Appeals and affirm the sentence imposed by the trial court. Although a life sentence is improper given the inadequacies in Saenz’s 2001 conviction, Saenz still must serve over 46 years in prison (561 months) including 10 years (120 months) of “hard time” for firearm enhancements for which he cannot earn good behavior credit. This is a serious punishment, as befits Saenz’s crime.
Madsen, C.J.; C. Johnson, Chambers, Owens, and Fairhurst, JJ.; and Alexander, J. Pro Tem., concur.