St. Mary's Montessori School

Fontana, California 92336

Accredited Montessori See this school on Google Maps →
Call (909) 200-4747

How it compares in Fontana

St. Mary's Montessori School is one of 2 Montessori schools in Fontana, and one of only 1 with full AMS or AMI accreditation.

All Fontana schools → Cost calculator →

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Visit & contact

Address
7370 West Liberty Parkway
Fontana, CA 92336
Call (909) 200-4747 Request a tour Visit website ↗ Get directions ↗ AMI/USA listing ↗

Facts & figures

From government filings and independent surveys — not the school's own marketing.

Classrooms

3 Infant/Toddler · 4 Primary

7 lead teachers · 19 assistants

Self-reported to the Montessori Census ↗

Staff

23 full-time teachers · 4 administrators

California private school affidavit, 2024-25

Programs, tuition & schedule

Quoted from stmarysmontessorischool.com.
"For years, our families have entrusted us with their children, which motivates us to continue to strive in being the best Montessori school in Rancho Cucamonga."
— St. Mary's Montessori School, Rancho page ↗

Accreditation & affiliations

  • AMI · affiliated
  • AMI-USA · affiliated

Source: school's Rancho page ↗

Programs offered

  • Nido Community
  • Infant Community
  • Primary Program
  • Elementary Program
  • Afterschool Programs
  • Summer 2026 Program
  • Atrium Faith Program

Source: school's Rancho page ↗

Some fields above are blank because they weren't published on the school's site. Call or email the school for tuition, admissions, and other details not listed here.

How to apply

Quoted from stmarysmontessorischool.com.

Schedule a tour ↗

Source: school's Rancho page ↗

About St. Mary's Montessori School

St. Mary's Montessori School is a Montessori school (private) in Fontana, California serving grades PK-K. For years, our families have entrusted us with their children, which motivates us to continue to strive in being the best Montessori school in Rancho Cucamonga.

Where is St. Mary's Montessori School located? ⌃

7370 West Liberty Parkway, Fontana, CA 92336

What is the phone number for St. Mary's Montessori School? ⌃

St. Mary's Montessori School can be reached at (909) 200-4747.

Is St. Mary's Montessori School accredited? ⌃

St. Mary's Montessori School lists the following accreditations or affiliations on its website: AMI (affiliated), AMI-USA (affiliated).

What ages does St. Mary's Montessori School serve? ⌃

St. Mary's Montessori School serves grades PK-K.

What is the website for St. Mary's Montessori School? ⌃

The official website is stmarysmontessorischool.com.

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