The top reported proficiency rate is 94% in Math. The lowest is 87% in Science.
Original Research by School Decision on Riverside School
Riverside School is an elementary school serving kindergarten through fifth grade in Riverside, a quiet, affluent residential neighborhood along the eastern bank of the Mianus River in Greenwich. The school enrolls a student body that leans heavily white and has very low economic need; only a small fraction of students qualify for free or reduced-price lunch. The enrollment is small to moderate for its grade span, with roughly even distribution across grades.
On Connecticut's state assessments for 2024-25, Riverside students demonstrated solid proficiency. In mathematics, fourth and fifth graders both showed strong results; third-grade math data was suppressed by the state for privacy reasons given the small cohort size. In English language arts, fifth graders performed especially well, while fourth graders showed respectable outcomes, and third-grade results were similarly suppressed. Fifth-grade science proficiency was somewhat lower than the ELA and math performance but still solid. Across the tested grades and subjects, Riverside's overall proficiency sits in the top quartile relative to other districts in the Western Connecticut Planning Region, reflecting sustained academic strength at the elementary level.
The school operates within the Greenwich School District, which is currently undergoing significant changes. A new Central Middle School is under construction to replace aging facilities, expected to open for the 2026-27 school year; families considering Riverside should be aware this represents a large capital investment and refresh of the secondary pipeline. The district has also adopted a Science of Reading curriculum aligned with Connecticut's Right to Read law, which took full effect in 2025 and shapes how reading is taught to younger students. A budget constraint in 2025 raised the possibility of school start-time shifts district-wide, though the status of those changes is not detailed here; a parent may want to check the district's current schedule before planning around drop-off and pickup.
Riverside itself is a built-out, high-value neighborhood where new housing development consists mainly of luxury single-family homes and occasional smaller townhouse projects rather than large multifamily additions. The area is anchored by the Metro-North train station, which provides commuter service to New York City, and by shoreline and river recreation; families tend to walk or bike children to school when weather permits. The neighborhood has limited walkable retail and dining of its own; residents typically head to nearby Old Greenwich or central Greenwich for shopping and restaurants. Compared to the state median home value, housing in the Riverside postal code is substantially more expensive, and the affordability metrics suggest a household would need significant income to carry a mortgage in this market.
For families seeking a traditional elementary school in a quiet, residential, affluent setting, Riverside offers proven academic performance and a small-school environment. Students here then transition into Greenwich's middle school system; Riverside School feeds into Eastern Middle School, also located in the Riverside area, before all district students converge at the single high school in Greenwich. Whether the school's composition and setting are the right fit depends on family preference; Riverside's demographics and neighborhood character reflect a specific place rather than a diverse cross-section of the region.
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