It is named after Brien McMahon, a former United States Senator from Norwalk.

The school's mascot is a Senator and its colors are red, white, and blue.

This is a magnet program for students in Fairfield County who want to learn Arabic, Chinese, or Japanese languages, and the respective culture and history.

The diversity break down of the school is 60% Hispanic, 22% White, 13% Black, 3% Asian, and 2% other.

Brien McMahon is a member of the Fairfield County Interscholastic Athletic Conference (FCIAC).