Child Sex-Offense Evidence and Notice Under Article 38.37

Why Article 38.37 Departs From the 404(b) Rule

In most Texas prosecutions, Rule 404 forbids proving that a defendant is the kind of person who commits crimes. Article 38.37 carves out a major exception for certain child sex-offense cases. It opens with the phrase “[n]otwithstanding Rules 404 and 405,” and on that authority it lets the State use a defendant’s other sexual misconduct as evidence of character and propensity.

The statute applies to a defined list of offenses against children — charges such as indecency with a child, sexual assault of a child, aggravated sexual assault of a child, and continuous sexual abuse. Within those cases, the Legislature made a deliberate choice to admit evidence that is, by definition, propensity evidence. As the court explained in Buxton v. State, section 2 permits evidence that the defendant committed a separate sexual offense against a child other than the complainant “for any bearing the evidence has on relevant matters, including the character of the defendant and acts performed in conformity with the character of the defendant.”

Because this evidence is so powerful — and so contrary to the ordinary rule — the statute does not turn the door wide open without controls. It pairs the propensity authorization with three safeguards a defendant can invoke: a judicial gatekeeping hearing before the evidence reaches the jury, a fixed pretrial notice deadline, and the ordinary Rule 403 balancing test. The rest of this page walks through the distinctions the statute draws and the procedural protections that go with them. Understanding those controls is what lets the defense contest 38.37 evidence rather than treat it as automatically admissible.

The statute’s reach is a matter of the charged offense, not the defense theory. If the indictment alleges one of the enumerated child sex offenses, the section 2 door is potentially open regardless of how the defense is framed; if it does not, the ordinary Rule 404 bar controls. Confirming at the outset whether the specific charge falls inside article 38.37 tells counsel whether to prepare for a propensity fight at all, and whether the section 2-a hearing and the thirty-day notice clock are in play.

Section 1 vs. Section 2: Against Whom and For What

Article 38.37 has two distinct admissibility provisions, and they reach different conduct. Section 1 concerns extraneous acts against the same child who is the victim in the case; section 2 reaches separate sex offenses against other children. The distinction controls both the purpose the evidence serves and the procedure that governs it.

In Perez v. State, the court laid out the split. Section 1 applies to “other crimes, wrongs, or acts committed by the defendant against the child who is the victim of the alleged offense,” admitted for its bearing on relevant matters such as the state of mind of the defendant and the child and their previous and subsequent relationship. Section 2, by contrast, “is not limited to evidence of offenses committed against the child who is the victim in the immediate prosecution” — it authorizes evidence that the defendant committed a separate enumerated sex offense against a different child, admissible for any bearing it has on relevant matters, including character and conduct in conformity with character.

That difference matters in practice. Section 1 evidence is closer to traditional context and relationship proof; section 2 evidence is openly propensity proof against a non-victim, and it is the provision that draws the gatekeeping hearing and the constitutional challenges discussed below. The comparison table sets out how the two provisions line up.

The Section 2-a Gatekeeping Hearing

Before section 2 evidence reaches the jury, the trial judge has to act as a gatekeeper. Section 2-a requires the court to decide, outside the jury’s presence, that the evidence is strong enough to support a jury finding that the defendant actually committed the separate offense. This hearing is the defendant’s first real chance to keep the propensity evidence out.

The standard is specific. In Belcher v. State, the court explained that before evidence of prior sexual misconduct is admitted, the trial court must conduct a hearing out of the jury’s presence to determine that the evidence likely to be admitted will support a jury finding that the defendant committed the separate offense beyond a reasonable doubt. Perez states the same requirement: the judge must find the evidence “adequate to support a finding by the jury that the defendant committed the separate offense beyond a reasonable doubt” and must conduct the hearing for that purpose.

For the defense, the section 2-a hearing is a substantive checkpoint, not a formality. It forces the State to put on its proof of the extraneous offense before the jury ever hears about it, and it lets the defense test the strength and reliability of that proof — the credibility of the outcry, the corroboration, the timing — while arguing the evidence falls short of the beyond-a-reasonable-doubt-support threshold. It is also the natural setting to raise the Rule 403 objection discussed below, so that the judge decides both the sufficiency and the prejudice questions before any of it is aired to the jury.

Counsel should insist that the hearing be a real one, on the record, with the State’s witnesses actually presented rather than summarized. The statute asks the judge to gauge whether the proof could support a jury’s beyond-a-reasonable-doubt finding, and that assessment is only as good as the evidence the court actually hears. A developed hearing record also preserves appellate review of both the sufficiency determination and the Rule 403 ruling, and it gives the defense an early, sworn preview of the extraneous accuser’s account.

The Section 3 Thirty-Day Notice Deadline

Article 38.37 also carries its own notice rule, and it is stricter in timing than the guilt-phase or punishment-phase provisions. Section 3 sets a fixed calendar deadline rather than a flexible “reasonable notice” standard, so the defense knows exactly how far ahead the State must disclose this evidence.

Belcher quotes the provision directly: section 3 states that “[t]he state shall give the defendant notice of the state’s intent to introduce in the case in chief evidence described by Section 1 or 2 not later than the 30th day before the date of the defendant’s trial.” That thirty-day floor gives the defense a defined window to investigate the alleged extraneous offenses, locate witnesses, and prepare for the section 2-a hearing — a meaningful head start given how damaging this category of evidence can be.

Preservation is critical. Belcher holds that a defendant who wants to complain on appeal about a section 3 notice failure must object at trial on that specific basis; a general objection will not do, because “a party’s objection must inform the trial court why or on what basis the otherwise admissible evidence should be excluded.” In Belcher itself, the defendant forfeited the notice complaint by never objecting on section 3 grounds. The practical takeaways are to request and confirm the State’s 38.37 notice early, calendar the thirty-day deadline, and, if the notice is late or missing, object on the record precisely to the section 3 violation rather than in general terms.

The thirty-day floor is a minimum, not a safe harbor. Notice that arrives on the thirtieth day may still leave little time to locate witnesses to an old allegation, and a defendant who needs more time can seek a continuance to investigate. The point of calendaring the deadline early is to preserve every option — a specific section 3 objection if the State is late, and a documented request for additional preparation time if the disclosure, though technically timely, still threatens surprise.

Rule 403 Still Guards the Gate

Even when section 2 makes propensity evidence admissible and the section 2-a hearing is satisfied, the evidence is not automatically in. Rule 403 still applies, and on a proper objection the trial court must weigh whether the danger of unfair prejudice substantially outweighs the probative value. The catch is that this evidence tends to be highly probative, so the balance often favors admission.

Belcher confirms that when extraneous-act evidence is relevant under section 2(b), the trial court is still required to conduct a Rule 403 balancing test upon proper objection or request. But Buxton cautions that the scales are weighted: evidence of prior sexual abuse of children is “especially probative” of a defendant’s propensity to sexually assault children, so the Rule 403 balancing test normally will not favor exclusion. That does not make the objection pointless — it makes it targeted.

The most productive 403 arguments focus on the factors that genuinely cut against admission. Remoteness is one: Perez recognized that a substantial gap in time between the extraneous offenses and the charged offense — especially where no final conviction was obtained — weakens the probative value, and in that case the admission of decades-old conduct was held to violate Rule 403 (though harmless on the record). Other productive angles include the number of extraneous incidents, the risk of a mini-trial that confuses the issues, and the cumulative nature of the proof. Effective 38.37 practice concedes the statute’s general admissibility while pressing the specific 403 factors that apply to the particular evidence the State wants to use.

Building the Rule 403 record is the defense’s most realistic path to limiting this evidence. That means marshaling the specific factors — remoteness, the number of separate incidents, the time a mini-trial on the extraneous offense would consume, and whether the extraneous accuser’s account is disputed — and asking the court to weigh each on the record. Buxton’s recognition that this evidence is especially probative does not excuse the balancing; it means the defense must give the court concrete reasons, tied to the particular offenses, why prejudice substantially outweighs probative value here.

Is Section 2 Constitutional?

Defendants have repeatedly challenged section 2 as a due-process violation, arguing that admitting propensity evidence undermines the presumption of innocence. The Texas courts of appeals have uniformly rejected that challenge, so the statute’s general validity is settled — which is why the defense fight is over the safeguards, not the statute’s existence.

In Harris v. State, the court held that section 2 is constitutional and does not violate due process, reasoning that there is no fundamental right to a trial free from extraneous-offense evidence and that the statute does not lessen the presumption of innocence or alter the State’s burden, because it must still prove every element of the charged offense beyond a reasonable doubt. Buxton agreed, joining its sister courts in holding that section 2(b) does not lessen the presumption of innocence or the State’s burden of proof and therefore does not violate due process. Perez likewise “formally join[ed]” the other courts in holding the provision constitutional.

The consistent thread in these decisions is that the statute’s procedural safeguards do the constitutional work. The section 2-a hearing ensures a judge screens the evidence for beyond-a-reasonable-doubt support before the jury hears it; Rule 403 remains available to exclude unfairly prejudicial proof; and the State still carries the full burden on the charged offense. Rather than attack the statute head-on, the defense is generally better served enforcing those safeguards — demanding a rigorous section 2-a hearing, holding the State to the section 3 notice deadline, and building a focused Rule 403 record. Those are the levers the statute actually leaves open.

That said, preserving the constitutional objection still has value. Although the courts of appeals have uniformly upheld section 2, a specific, timely objection keeps the issue alive for review and guards against a later change in the law. The efficient approach is to lodge the constitutional objection to preserve it, then devote the hearing to the safeguards that can actually keep evidence out in the case at hand — the sufficiency screen, the notice deadline, and the Rule 403 balance.

Where This Fits

This guide is one of four situations that arise under the Motion for Notice of Extraneous Offenses (404(b) / Punishment). Start with the parent motion for the overall framework, or move to a related fact pattern:

What the Case Law Says

These decisions—verified against primary sources—control how this issue is litigated. Every case still turns on its own facts.

• Belcher v. State, 474 S.W.3d 840 (Tex. App.-Tyler 2015, no pet.) — Before section 2 evidence is admitted, the court must find in a hearing that it could support a beyond-a-reasonable-doubt finding of the separate offense.
• Perez v. State, 562 S.W.3d 676 (Tex. App.-Fort Worth 2018, pet. ref'd) — Section 1 reaches acts against the child victim; section 2 reaches separate sex offenses against other children and is facially constitutional.
• Buxton v. State, 526 S.W.3d 666 (Tex. App.-Houston [1st Dist.] 2017, pet. ref'd) — Section 2(b) admits separate child sex offenses as character and propensity evidence notwithstanding Rules 404 and 405, and does not violate due process.
• Harris v. State, 475 S.W.3d 395 (Tex. App.-Houston [14th Dist.] 2015, pet. ref'd) — Article 38.37 section 2 is constitutional; it does not lessen the presumption of innocence or the State's burden of proof.

General summaries of published opinions for information only — not predictions about any specific case.