Mentor High School is a public high school located in Mentor, Ohio. It is the only high school in the Mentor Exempted Village School District (informally, "Mentor Schools"). In the 2008–2009 school year, it shifted from a three-year school (grades 10–12) to a four-year high school (grades 9–12), serving 3,200 students. It is the eighth largest high school by enrollment in the State of Ohio. Mentor High School educates students from Mentor, Mentor-on-the-Lake, and parts of Kirtland Hills and Concord Township in Lake County, Ohio.