“…One-teach/one-assist and one-teach/one-observe are the most widely used co-teaching models (Scruggs, Mastropieri, & McDuffie, 2007; Strogilos, Stefanidis, & Tragoulia, 2016). The role of the assisting or observing teacher has been described as the support role (King-Sears, Jenkins, & Brawand, 2018; Solis, Vaughn, Swanson, & McCulley, 2012), often filled by the special educator (Hang & Rabren, 2009). For this article, the one-teach/one-assist and one-teach/one-observe models are combined and referred to as a “one-teach/one-support model,” with the teacher not leading instruction in the support role.…”