The houses are named after Ralph Waldo Emerson, Nathaniel Hawthorne and John Greenleaf Whittier, three famous New England writers.

New ceilings and floor tiles, electrical and HVAC upgrades, and a 1,000-seat state-of-the-art Performing Arts Center (P.A.C.)

The construction, completed in 2007, gave Chelmsford High School its own auditorium for the first time in its (then) 33-year history.

serves as a forum for functions such as the performances by the school's music and theater programs and various assemblies.

[7] Varsity sports offered include:[8] Beginning in 2016–17, CHS entered into a cooperative girls hockey team with neighboring Billerica.

[9] Beginning in 2018–19, CHS entered into a cooperative girls gymnastics team with neighboring Billerica and Tyngsboro.