Enrollment is approximately 525 in all grades, including special education students. The faculty numbers 50 full and part time teachers, administrators, and counselors. MHS is a member of the Illinois High School Association and affiliated with the Olympic Conference. The code number is 142-970 . Accreditation Monmouth High School is fully accredited with the North Central Association of Schools and Colleges and exceeds instructional standards set forth by the Illinois State Board of Education Recognition System.
All classes meet five times per week for fifty minutes per period.
The school operates on a traditional seven period school day. MHS has a small number of weighted classes which receive one extra honor point per semester. Rank in Class Official class rank each semester at MHS is determined by an accumulation of honor points, from most to least. To receive a diploma from Monmouth High School a student must present the following minimum credentials according to the chart and special graduation notes. One-half credit is awarded per semester per passing grade in all subjects.