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Rule 91.3.Post-Judgment Petition to Modify Legal Decision Making; Parenting Time; or Education Order

Part XI. Post-Decree/Post Judgment Proceedings · Last amended January 1, 2026 · Last verified September 4, 2026

In one sentenceRule 91.3 governs petitions to modify legal decision-making, parenting time or an education order, requiring detailed supporting facts and verification or affidavits under statute.

Full Text of Rule 91.3

Text sizeJump to: (a) (b) (c) (d)

(a) Petition. A petition for modification of legal decision-making or parenting time:
(1) must comply with Rule 91;
(2) must contain detailed facts supporting the modification;
(3) must be verified by the applicant or supported by affidavit(s) as required by A.R.S. § 25-411; and
(4) in actions in which the legal decision-making order or decree was not entered by an Arizona court, must include an affidavit required under A.R.S. § 25-1039.
(b) Service. In addition to complying with Rule 91(j), the applicant must comply with A.R.S. § 25-1035.
(c) Disclosure. Parties must disclose:
(1) a copy of any current protective orders and underlying petitions involving a party or member of the party's household, or prior order or petition filed since the last decree or judgment addressing legal decision-making or parenting time;
(2) for each parent and child, the name and address of each treatment provider and period of treatment involving any party for psychiatric or psychological issues, anger management, substance abuse, or domestic violence, occurring since the last decree or judgment addressing legal decision-making or parenting time;
(3) the date, description, location, and documentation of any criminal charge against or conviction of any party or member of the party's household occurring since the last decree or judgment addressing legal decision-making or parenting time;
(4) the date, description, location, and documentation of any Department of Child Safety investigation or proceeding involving any party or member of the party's household occurring since the last decree or judgment addressing legal decision-making or parenting time; and
(5) relevant documents and information regarding any relevant statutory factor.
(d) Education Order. If the court finds that it is in the children's best interests for an Education Order to be issued, any order granting modification issued under this rule must include an “Education Order” substantially in conformity with Rule 97, Form 19 or Form 20, as appropriate. If an Education Order had been previously issued, the court may vacate or modify it if it finds it is in the children's best interests.
End

Rule History

Added Aug. 30, 2018, effective Jan. 1, 2019. Amended on an emergency basis Aug. 24, 2023, effective Jan. 1, 2024, permanently adopted with additional amendments Aug. 22, 2024, effective Jan. 1, 2025; amended effective Jan. 1, 2026.

Plain-English Summary

Rule 91.3 is the parenting modification rule, and its requirements are heavier than the money modifications in Rule 91.1.

What the petition must carry

Compliance with Rule 91; detailed facts supporting the modification; verification by the applicant or supporting affidavits as A.R.S. section 25-411 requires; and, where the order or decree was not entered by an Arizona court, the affidavit A.R.S. section 25-1039 requires. Service must satisfy Rule 91(j) and A.R.S. section 25-1035.

Two of those come from the interstate custody statutes -- the extra affidavit and the extra service requirement apply precisely when the existing order came from somewhere else, and they exist so the Arizona court can confirm it has authority to modify another state's order before it does.

Disclosure keyed to the last order

Five categories, and four of them measure from the same point -- since the last decree or judgment addressing legal decision-making or parenting time:

  • current protective orders and their petitions involving a party or household member, or any prior order or petition filed since the last decree;
  • for each parent and child, treatment providers and treatment periods for psychiatric or psychological issues, anger management, substance abuse or domestic violence;
  • criminal charges and convictions of a party or household member, with date, description, location and documentation;
  • Department of Child Safety investigations or proceedings, with the same detail; and
  • relevant documents regarding any relevant statutory factor.

Compare Rule 49(d), which asks the same questions at the start of a case using fixed lookbacks -- 5 years for treatment, 10 for criminal charges and child safety matters. Post-judgment the window is whatever has happened since the last parenting order. The court already knows the history; what it needs is the change.

Education orders

If the court finds it in the children's best interests, any order granting modification must include an Education Order substantially conforming to Form 19 or Form 20 of Rule 97. Where one was previously issued, the court may vacate or modify it on the same best-interests standard.

Frequently Asked Questions

What must a parenting modification petition contain?

Rule 91.3(a) requires compliance with Rule 91, detailed facts supporting the modification, verification by the applicant or supporting affidavits as required by A.R.S. section 25-411, and where the order was not entered by an Arizona court, the affidavit required under A.R.S. section 25-1039.

How far back does my disclosure have to go?

Rule 91.3(c) keys the disclosure to what has occurred since the last decree or judgment addressing legal decision-making or parenting time, rather than to the fixed 5-year and 10-year lookbacks Rule 49(d) uses at the start of a case.

What if the existing order came from another state?

Rule 91.3(a)(4) requires the affidavit under A.R.S. section 25-1039, and Rule 91.3(b) requires the applicant to comply with A.R.S. section 25-1035 in addition to Rule 91(j).

Does the petition have to be sworn?

Yes. Rule 91.3(a)(3) requires the petition to be verified by the applicant or supported by affidavits as required by A.R.S. section 25-411, on top of the Rule 91(c) verification requirement.

Can an education order be changed?

Rule 91.3(d) requires an order granting modification to include an Education Order substantially conforming to Form 19 or Form 20 of Rule 97 if the court finds it in the children's best interests, and allows the court to vacate or modify a previously issued one on the same standard.

Source & verification. Rule text and Rule History reproduced verbatim from the Arizona Rules of Family Law Procedure as published by the Arizona Supreme Court, current through amendments effective January 1, 2026. Promulgated by the Supreme Court of Arizona (Ariz. Const. art. 6, § 5). Last verified September 4, 2026. · Official text
Also known as: modify parenting timemodify legal decision-makingcustody modificationeducation order25-411detailed factschild safety