The Odyssey Institute for Advanced and International Studies (OIAIS) is a charter high school serving grades 9 through 12 in Buckeye, Arizona. Scholars in high school may wear maroon or black uniform shirts, and black pants/shorts, and khaki pants/shorts. In previous years, the school was a combination of grades 6-8 and 9 through 12, but in the current school year (2016-2017) the school has since split to become a middle and high school. Scholars in middle school may only wear black plants/shorts and a grey uniform shirt. Additionally, scholars are required to only wear (OIAIS) branded outerwear or a solid colored jacket that corresponds with the school's colors.