MHHS is located at 300 South 11th East, and the principal is Sam Gunderson.

Previous buildings at other sites were built in 1926, 1905, and earlier, as yearbooks indicate MHHS graduates back to 1901.

A three-year senior high school (10–12) for decades, freshman returned to the MHHS campus in 2009.

The MHHS athletic teams compete in the Great Basin Conference (GBC) in IHSAA Class 4A, the state's second-highest enrollment classification (160–319 students per class year).

[3] MHHS is the largest high school in Elmore County, which includes Glenns Ferry, which competes in 2A (with a 1A enrollment).