The school's architectural style reflects a castle-like theme, its mascot is the knight, and its colors are black, white, and teal.

It houses a planetarium and, at the time of its construction, the largest performing arts center of the Las Cruces' high schools.

[3][4] Beginning in the 2010–2011 academic year, the NMPED (New Mexico Public Education Department) replaced the No Child Left Behind Act and AYP testing with a new grading formula.

Since then, grades and student performance have been calculated through various forms of testing which also include graduation rates.

[5] OMHS competes in the New Mexico Activities Association (NMAA), as a class 6A school in District 3/4.