The application process begins in January when students begin to think about their schedules for the next school year. Rising juniors and seniors may obtain an application packet from their home school guidance counselor. The application packet consist of a recommendation page from the counselor, the principal, a teacher, and the parent/guardian. Following completion of the application, each applicant will be interviewed by an OMC staff member. Final acceptance into OMC is usually completed by mid-April.

After acceptance at OMC, arrangements will be made for any college placement testing that is necessary and meetings with college advisors to select college courses for the fall semester. This step is usually completed prior to the end of the school year.