Best High Schools in Zip Code 06340

The three high schools serving zip code 06340 in Groton, Connecticut—Robert E. Fitch High School, Ella T. Grasso Technical High School, and Marine Science Magnet High School—educate roughly 1,900 students in grades 9–12 through three distinct models: a traditional public school in the Groton School District, a career-technical school in the Connecticut Technical Education and Career System, and a magnet school operated by Learn.

Marine Science Magnet High School is the clear academic standout, ranking 23rd of 141 schools with a 4-star rating and posting the highest proficiency rates in all three subjects—77.4% in science, 77.8% in ELA, and 49.2% in math—all well above state averages, alongside a 98.4% graduation rate. Ella T. Grasso Technical High School boasts the best graduation rate (98.7%) and lowest chronic absenteeism (13.4%, the only school below the state average), yet its SAT math proficiency is just 9.1%, reflecting its hands-on career-technical mission. Robert E. Fitch High School, the largest at 942 students, ranks 56th with a 3-star rating, leads among the three for 2025–2026 ELA (56.9%), and beats the state in science (57.7%)—but its 25.4% chronic absenteeism is 1.5 times the state average.

All three schools exceed Connecticut's 91.2% average graduation rate, with Fitch the lowest at 94.9%—a sign that high school completion is an area strength. Math is the regional weak spot: only Marine Science Magnet clearly beats the state average of about 31%, while Grasso and Fitch lag or barely keep pace. Science is a relative strength, with two schools above the state's 50.5% proficiency rate. Poverty levels track the academic rankings—Marine Science Magnet has the lowest free/reduced lunch rate (30.66%) and Fitch the highest (59.98%)—but each school offers distinct value: Grasso's workforce readiness and stellar attendance, Fitch's comprehensive traditional programming, and Marine Science Magnet's rigorous college-prep academics.