Summary:
ZIP code 03755 has one high school serving grades 9–12: Hanover High School, with 674 students in the Dresden School District. The school is located in a high-performing educational area, with a favorable 10.6-to-1 student-teacher ratio and a reported free- or reduced-price lunch rate of 5.49%. Since there is only one high school in the ZIP code, families are evaluating the school’s performance and resources rather than choosing among multiple local high schools.
Hanover High School has maintained an outstanding statewide position, ranking third among 89 New Hampshire high schools in 2025–2026 after ranking second in each of the two previous years. Its 98.1% graduation rate was well above the state’s 87.0%, while its 0.6% dropout rate was considerably below the statewide 2.3%. Academic results were also strong: 93% of students were proficient in reading, 75% in mathematics, and 56% in science, compared with statewide rates of 55%, 44%, and 38%. Eleventh-grade SAT results were especially impressive, with 75% meeting the mathematics benchmark and 93% meeting the reading benchmark, compared with 30% and 62% statewide.
The main point for parents to watch is the change in recent academic results. Reading declined modestly from 96% to 93%, mathematics fell from 82% to 75%, and science dropped more substantially from 76% to 56%. Even after these declines, the school remained well above state averages, but science was below the district’s 64% result and mathematics was slightly below the district’s 78%. Overall, the combination of strong rankings, excellent graduation outcomes, low dropout levels, and consistent reading and SAT performance makes Hanover High School one of New Hampshire’s strongest high schools. The recent mathematics and science results are the most important areas for families and school leaders to monitor.
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