Aitkin High School (AHS) is a public high school in Aitkin, Minnesota. The school serves students in grades 7–12. The school enrolls approximately 600 students per year, with 400 students in the high school and 200 attending middle school. The school is a combined middle and high school, since the town does not have the needed population of adolescents to include a separate middle school. Class sizes are around 100 students, while some classes, such as the Class of 1978, have enrolled up to 160 students at one time. The Class of 2010 is one of the smallest Aitkin High School classes in history, with a class size at graduation of 83. The class entered with 98 students in 2004.