School AMS Member

Allium Montessori School

Lower Elementary

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1555 Massachusetts Ave, Cambridge, MA 02138, USA, Cambridge, Massachusetts 02138

Tuition Read directly from this school's own published rate card as of 2026-08-11 — not confirmed by the school. The school can claim this listing and correct it anytime.Source: From the school's published rate card (unconfirmed)

$24,500 USD/yr

Stages Montessori groups children into multi-year stages by developmental period, not single grades.Source: From the school's published rate card (unconfirmed)

Lower Elementary

Accreditation "Montessori" has no trademark protection, so accreditation from a real body is the closest thing to a quality check.Source: Accrediting body's own directory

AMS Member

One of 6 officially accredited Montessori listings in Cambridge on MontessoriCity.

Information compiled from public sources. Is this your school? Claim this listing — free, and never affects ranking.

Tuition & Programs

Read directly from this school's own published rate card as of 2026-08-11 — not confirmed by the school.

Lower Elementary$24,500–$24,500 USD/year

Is this an accredited Montessori school?

AMS Member

AMS Member means the school has joined the American Montessori Society and affirms alignment with Montessori principles, but has not (yet) completed AMS's formal accreditation review — membership alone doesn't verify classroom practice.

Verify directly at amshq.org/schools using the school's name and city.

Accreditation is not the same as an operating licence. A provincial/state child care licence or private school registration only confirms a school is legally allowed to operate — it says nothing about whether the teaching method is Montessori.

Teacher credentials matter too. Ask how many lead teachers hold AMI, AMS, or MACTE-accredited teacher training — a strong signal independent of the school's own accreditation status.

Full guide: how to verify any Montessori school →