Best Public Schools in Zip Code 06830

Zip code 06830 (Greenwich, CT) is served by 7 public schools—4 elementary, 2 middle, and 1 high school—all part of the highly rated Greenwich School District, which ranks 14th out of 153 Connecticut districts with a 5-star rating. Total enrollment across the schools is roughly 4,987 students, and the area is marked by wide economic diversity, with free/reduced-price lunch eligibility ranging from 4.38% at North Street School to 61.6% at New Lebanon School.

North Street School is the top-ranked elementary school in the zip code (98th percentile, 5 stars), with the lowest chronic absenteeism (7.3%) and exceptional test scores, including 94.5% proficiency in 4th-grade ELA. However, the standout story is New Lebanon School, which rose from the 63rd to the 98th percentile in just two years despite having the highest poverty rate in the area—a dramatic improvement likely tied to its district-leading $44,272 per-student spending and low chronic absenteeism (9.6%). By comparison, Hamilton Avenue School, with a similar poverty rate (59.9%), spends over $23,000 less per student, has much higher chronic absenteeism (17.5%), and ranks 161st. Among the two middle schools, Central Middle School is clearly stronger than Western Middle School, leading in most math and science proficiency rates and having lower chronic absenteeism (9.7% vs. 12.7%). Greenwich High School is the only high school in the zip code and posts a 98% graduation rate, with 87.8% proficiency in 11th-grade science—far above the state average of 50.5%.

Every school in this zip code beats Connecticut state proficiency averages, but the gaps within the area are meaningful. Hamilton Avenue and Julian Curtiss School both have chronic absenteeism rates above the state average (17.5% and 17.0% respectively), yet Julian Curtiss still achieves a 73rd-place state ranking. Spending varies widely: New Lebanon spends nearly triple what Greenwich High spends per student ($44,272 vs. $15,406), reflecting a clear resource allocation pattern favoring elementary and middle schools. Grade-level soft spots exist even at elite schools—for example, North Street's 5th-grade math proficiency drops to 76.7% versus 89.3% in 3rd grade, and Western Middle's 7th-grade math is just 58.9%. Overall, this is a strong district with standout schools and notable but manageable challenges around attendance and equity.