Best Elementary Schools in Zip Code 06831

In zip code 06831, which covers the Riversville/Greenwich area of Connecticut, there are two elementary schools serving grades K-5 — Glenville School and Parkway School — both part of the highly rated Greenwich School District. With only two schools, this is best viewed as a head-to-head comparison, and Parkway is the clear standout. Parkway currently ranks #13 out of 491 elementary schools in Connecticut, placing it in the top 3% statewide, and it has improved its rank for three straight years. Its 2025–26 ELA proficiency rates are exceptional — 91.7% in 3rd grade, 90.0% in 4th, and 82.4% in 5th — while its chronic absenteeism is just 5.1% and its free/reduced lunch rate is 4.42%. Glenville, by contrast, ranks #119 (76th percentile) and is a solid but less consistent option, with 2025–26 scores above state averages but below district averages in every reported subject.

Glenville’s recent trend is more concerning: it improved from #88 to #47 between 2023–24 and 2024–25, then dropped sharply to #119 in 2025–26. Parkway’s math and science scores are also strong, though 3rd- and 4th-grade math data are missing for 2025–26. Both schools have similarly small class sizes (student-teacher ratios around 10.4–10.8), low chronic absenteeism near 5%, and low poverty indicators compared to state averages. The most surprising difference is per-student spending: Parkway spends $25,624 per student versus $13,446 at Glenville — nearly a 2:1 gap — despite both being in the same district and having nearly identical student-teacher ratios. This is likely due to differences in program costs, special education funding, or facility expenses, and should be interpreted cautiously.

One notable bright spot for Glenville is its 2024–25 5th-grade science performance, where 87.8% of students were proficient — well above the district (81.8%) and Parkway (75.0%), and nearly 36 points above the state average. That suggests Glenville can excel in specific subjects or with particular cohorts. Overall, Parkway is the higher-performing school by nearly every academic measure, while Glenville remains above state averages but currently lags both Parkway and its own district. Families choosing between these two schools would likely prioritize Parkway for raw academic performance, though Glenville is still a strong neighborhood school with low absenteeism and supportive community conditions.