Mount Sinai Middle School, Mount Sinai NY

Original Research by School Decision on Mount Sinai Middle School

Mount Sinai Middle School serves students in grades five through eight in a quiet, predominantly residential North Shore hamlet on Long Island. The school sits on a consolidated campus with the district's elementary and high schools, separate from the Route 25A commercial corridor that anchors most local retail and employment. The enrollment is small to mid-sized for this grade band, with white families making up the majority of the student body, followed by a smaller Hispanic population; roughly one in nine students qualify for free or reduced-price lunch.

The most recent state test data shows a mixed picture across subjects and grades. In English language arts, performance is stronger in the upper grades: seventh graders show solid proficiency, as do eighth graders, while fifth and sixth graders show lower proficiency. In math, seventh graders perform well—notably above the school's performance in other grades and subjects—but fifth, sixth, and eighth grade math proficiency is closer to fifty percent. Science results, available only for fifth and eighth grades, align with this pattern: fifth grade lags, while eighth graders do considerably better. These results put the school in the top quartile among districts across Suffolk County when looking at overall proficiency across tested subjects and grades, a strength that reflects solid upper-level performance, though a parent may want to look into the school's support strategies in the earlier middle grades, particularly in math and science.

The district recently passed a bond referendum funding campus-wide infrastructure improvements, including a new turf field and safety upgrades. More immediately for younger families, the district is launching a free, five-day-per-week universal pre-kindergarten program starting in the 2026-2027 school year, available through lottery enrollment. The district has also adopted a strategic plan emphasizing career pathways, dual enrollment, and computer science, signaling a direction toward workforce-readiness programming at the high school level and beyond. No information was available regarding special education enrollment, English learner services, or detailed program offerings at the middle school itself.

Mount Sinai's housing market reflects broader Long Island trends: median home values are in the mid-range for the North Shore, and the area has seen steady postwar residential growth from farmland into subdivisions and gated communities. Recent developments include mixed-use rental housing aimed at younger adults and senior living complexes. The school district, anchored at North Country Road, functions as a major employer in the hamlet. The community offers recreational amenities—Cedar Beach with its walking trails and harbor access, Heritage Park with the Heritage Center—but lacks a traditional downtown main street. Most shopping and dining cluster along Route 25A. Nearby Port Jefferson offers a walkable village alternative about a short drive away.

A parent moving into the district would enter a community where the school bond and long-term capital plan will shape property taxes and campus life for years. The middle school's upper-grade performance is a clear strength; the performance gap in fifth and sixth grade warrants conversation with the school about curriculum, transitions, and intervention pathways. The district's moves toward career and dual-credit options signal a post-secondary focus, typical of an emerging Long Island suburb positioning itself for middle-class suburban stability.

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Academic performance

How students perform on state tests, by grade, set against the district.

New York Regents Exams

2 courses reported · 2024-25

End-of-course exams required for a New York Regents diploma. Each row shows the cohort size and the share of students scoring at the proficient level or higher.

Course	Students tested	% proficient
Math	54	100.0%
Science	53	100.0%

Math

Grade 549%

School 49% · District 49%

▼ 2 pts below state median · even with county median

Grade 653%

School 53% · District 53%

▲ 8 pts above state median · ▲ 7 pts above county median

Grade 781%

School 81% · District 79% · ▲ 1 pts above district

▲ 28 pts above state median · ▲ 20 pts above county median

Grade 850%

School 50% · District 50%

▲ 13 pts above state median · ▲ 25 pts above county median

English language arts

Grade 560%

School 60% · District 60%

▲ 6 pts above state median · ▲ 14 pts above county median

Grade 655%

School 55% · District 55%

▲ 9 pts above state median · ▲ 10 pts above county median

Grade 769%

School 69% · District 68% · ▲ 1 pts above district

▲ 21 pts above state median · ▲ 23 pts above county median

Grade 866%

School 66% · District 66%

▲ 17 pts above state median · ▲ 21 pts above county median

Science

Grade 553%

School 53% · District 53%

▲ 11 pts above state median · ▲ 12 pts above county median

Grade 867%

School 67% · District 67%

▲ 33 pts above state median · ▲ 40 pts above county median

Social studies

Grade 599%

School 99% · district not reported

▲ 7 pts above state median · ▲ 2 pts above county median

Grade 897%

School 97% · district not reported

▲ 18 pts above state median · ▲ 5 pts above county median

This schoolMOUNT SINAI UNION FREE SCHOOL DISTRICT, same grade

Graduation rate (ACGR) reflects the federally published Adjusted Cohort Graduation Rate for the most recent year available. We refresh this data annually at the close of each academic year in June. The federal source publishes a banded rate (for example, "90-94%") instead of an exact number for cohorts small enough to risk identifying individual students. The state distribution chart, where shown, plots every school in the state with a published rate or band; schools whose rate is federally suppressed are excluded. Where the federal source publishes a band rather than an exact rate, the school is placed within its band using a stable, ID-derived offset, so its position is consistent across visits.

Proficiency by household income

English language arts

Grade 5Lower-income18%Higher-income67%49 pp gap

Grade 6Lower-income53%Higher-income55%2 pp gap

Grade 7Lower-income50%Higher-income71%21 pp gap

Grade 8Lower-income57%Higher-income68%11 pp gap

Mathematics

Grade 5Lower-income46%Higher-income50%5 pp gap

Grade 6Lower-income57%Higher-income51%6 pp gap

Grade 7Lower-income57%Higher-income83%26 pp gap

Grade 8Lower-income54%Higher-income48%6 pp gap