The city's Board of Education approved the plan this week, saying it will reduce the peer pressure to wear certain brands and help students focus instead on their classwork.
The district has required uniforms for the last two years for students in pre-kindergarten through eighth grade, so it will not be unfamiliar to next fall's freshmen and sophomores.
The policy prohibits jeans and hooded sweatshirts, and principals can require a student not to wear attire that administrators consider "disruptive." The policy also limits pants to tan, navy or black, and they must be belted at the waist.
Hartford, Waterbury and New Haven also require uniforms in many of their city schools.