When parents of students with disabilities reach impasse with school districts, after exhausting informal interactions and alternative dispute resolution mechanisms, such as facilitated IEP meetings and mediation, what is the next step if they seek a binding third-party decision under the IDEA? The typical answer, especially if the underlying issue is the IDEA's central obligation of a free appropriate public education (FAPE), is not a lawsuit, but rather a due process hearing. However, the IDEA provides for another alternative that is less well known but in some cases more effective. Specifically, the IDEA (2018) regulations require every state to have, in addition to due process hearings, a complaint procedures mechanism (§§ 300.151-300.153). The overview presented in this article acquaints school psychologists with the key features of the IDEA's state complaint procedures (SCP), in comparison to due process hearings (DPH), as part of their legal literacy toolkit. This succinct and systematic analysis will help school psychologists fulfill their pivotal role in facilitating dispute resolution under the IDEA and keeping all participants focused on the individual needs of the child within the context of the school community.