In contrast with professional norms and best practices, the legal requirements for functional behavioral assessments (FBAs) and behavior intervention plans (BIPs) are meager in scope and specificity (Collins & Zirkel, 2017). Section 504 of the Rehabilitation Act makes no mention of FBAs or BIPs, and the Individuals with Disabilities Education Act (IDEA) only requires them, in tandem with manifestation determinations, for disciplinary changes in placement (§ 1415[k][1][D]-[F]). The line of court decisions that interpret and apply the IDEA, including its corollary state laws, to FBAs and BIPs has continued unabated. Three successive empirical analyses have traced the frequency and outcomes of the court decisions with rulings specific to FBAs or BIPs under the IDEA. The purpose of this update was to determine the corresponding results for the most recent period of July 1, 2020 to September 1, 2024. This analysis of 4 years' worth of court decisions regarding functional behavior assessments and behavior intervention plans highlights the importance of maintaining legal literacy while engaging in best practices to support students.