Toddler through 8th grade — one of Brooklyn's established Montessori schools, AMS + NYSAIS accredited and celebrating 60 years.
Among the most transparent in the guide — each teacher and staff member has an individual page with a bio, and many list degrees and Montessori credential levels. You can see who would teach your child. Why this matters →


Cobble Hill is a landmarked Brownstone Brooklyn enclave of tree-lined streets, the Court and Smith Street shopping corridors, and a famously family-dense scene — quiet, walkable and stroller-friendly, with the F/G at Bergen St.
Founded in 1965, Brooklyn Heights Montessori (BHMS) is one of Brooklyn's oldest Montessori schools and runs an unusually long continuum — from age two all the way through 8th grade — in a purpose-built Cobble Hill facility with a black-box theater, learning kitchen, library and roof garden. It's independent and non-profit, and is one of the few NYC Montessoris accredited by both AMS and NYSAIS.
Classrooms run in three-year cycles from Twos through Middle School (structured as Lower Elementary 1–3, Upper Elementary 4–6, Middle School 7–8), with Peace Education, integrated arts, interscholastic sports (basketball, soccer, track, volleyball) and dedicated high-school placement counseling.
Published on the school's site for 2026–27: from $19,200 (2-day Twos, half) up to $60,200 (Grades 7–8), with Kindergarten at $57,100. A full-day preschool place (~$56,700) sits well above the citywide median — see the tuition page. Financial aid is available from Kindergarten up.
Stephanie Pax Flanigan has been Head of School since 2019, after 18 years leading the Montessori School of Denver; she serves on the AMS School Accreditation Commission and a NYSAIS accreditation commission (B.A. Mount Holyoke; J.D. Case Western). Her background is governance and accreditation rather than classroom Montessori training — worth noting — but the faculty page gives each teacher an individual bio, several listing Montessori credential levels, which drives the Green transparency rating.
BHMS is accredited (not merely a member) by both AMS and NYSAIS — the strongest authenticity signal in this guide. See our authenticity guide for why accreditation beats membership.
Independent non-profit, board-governed, marking its 60th year in 2025. No instability signals.
Niche shows 4.38/5 (8 reviews) — mostly warm, with a real minority raising early-grade academic rigor and, in one older review, bullying. A balanced picture rather than uniformly glowing:
"BHMS is the best Montessori school in NYC. My child has attended for 10 years… the kids are truly happy at the school. Mustang spirit is real!" — Parent review, Niche, Dec 2024
"An intimate community that recognizes and supports each child as an individual… process is emphasized over worksheets." — Parent review, Niche, 2019
Signals from public parent forums and listservs (Park Slope Parents, Brooklyn Bridge Parents, Reddit, UrbanBaby) and our own parent & alumni interviews. Forum chatter is opinion — often anonymous and sometimes years old — so take it with a grain of salt; interview quotes are first-hand and shared with permission.
Note: much of the Park Slope Parents discussion centers on the school's popular summer camp.
BHMS uses "open admissions," with Twos and Threes the largest entry points; inquire and tour in the fall. Map the citywide calendar with our admissions timeline and planner.