Located in downtown Roswell, NMMI enrolls nearly 1,000 cadets at the junior college and high school levels each year.

[7][8] On June 10, 2013, the school filed a lawsuit in Chaves County to take control of the assets of the alumni association.

[9] Editorial response to the institute's actions has been generally negative, calling it a "hijacking" of the group and its resources.

[13] The original area of land for the campus was donated to the school by local rancher James J. Hagerman, for whom the main barracks complex is named.

[citation needed] The campus is a designated area on the National Register of Historic Places.

College and High School were separated in the Corps and in two different barracks starting in the fall of 2022 as well, except at the regimental staff level.

[14] Minor offenses against these rules may result in simple correction of behavior or disciplinary measures like push-ups.

[23] Taufa'asau departed NMMI to accept the head coaching position at New Mexico Highlands University in early 2024.

The women's college volleyball team, coached by Shelby Fortchner,[25][26] also competes in the NJCAA and were national runner-ups in the 2021-2022 season.

[27] They also have college golf, tennis, cross country, baseball and basketball teams at the NJCAA level, that compete under the Bronco name.

[28] The high school sports mascot is the Colts, and they compete in various divisions and districts in the NMAA, including football, soccer, volleyball, tennis, swimming and diving, golf, basketball, baseball, cross country, and track and field, competing with other New Mexico high schools in the region.