Nashua's school district is SAU #42.  This unit includes twelve elementary schools, three junior high schools and two high schools.  About 15,000 students attend the Nashua School District and all have the opportunity to attend one of several technical centers for vocational training should they choose to do so.  The award-winning Nashua School District is hailed as one of the best city school districts in the state.

Public schools
• Amherst Street School, 71 Amherst St., 594-4385.
• Bicentennial Elementary School, 296 East Dunstable Road, 594-4382.
• Birch Hill Elementary School, 17 Birch Hill Dr., 594-4340.
• Broad Street School, 390 Broad St., 594-4404.
• Charlotte Avenue School, 48 Charlotte Ave., 594-4334.
• Dr. Norman W. Crisp School, 50 Arlington St., 594-4390.
• Fairgrounds Elementary School, 37 Blanchard St., 594-4318.
• Ledge Street School, 139 Ledge St., 594-4337.
• Main Dunstable Elementary School, 20 Whitford Road, 594-4400.
• Mount Pleasant Elementary School, 10 Manchester St., 594-4331.
• New Searles School, 44 Shady Lane, 594-4409.
• Sunset Heights School, 15 Osgood Road, 594-4387.
• Elm Street Junior High School , 117 Elm St., 594-4322.
• Fairgrounds Junior High School, 27 Cleveland St., 594-4393.
• Pennichuck Junior High School, 208 Manchester St., 594-4308.
Nashua High North 10 Chuck Druding Drive, 589-6400
Nashua High South 36 Riverside Drive, 589-4311

Private schools
• St. Christopher School, 20 Cushing Ave., 882-7442.
• Infant Jesus School, 3 Crown St., 889-2649.
• Nashua Catholic Regional Junior High School, 6 Bartlett Ave., 882-7011.
• Bishop Guertin High School, Lund Road, 889-4107.
• Small World Country Day School, 888-1982