School Divisions

Children’s House (CH) (33 Eliot Street):
Toddler, Primary and Kindergarten

Lower Elementary (LE) (37 Eliot Street):
1st – 3rd grade

Upper Elementary (UE) (40 Eliot Street):
4th – 6th grade

Middle School (MS) (35 Eliot Street):
7th and 8th grade

Office Hours & Information:

8:00 a.m. – 4:00 p.m.
(Monday to Friday)

Main Number: 508-655-7333

Fax Number: 508-655-3867

After Care Phone: 774-286-9946

Mailing Address:
39 Eliot Street, Natick, MA 01760


  • 1907 – First Montessori program, Maria Montessori’s Casa dei Bambini (Children’s House) established in Rome, Italy
  • 2010 – Riverbend School formed from the merger of Eliot Montessori School (1971–2010) and Natick Montessori (2000–2010)
  • 2020 – Riverbend School debuts new Lower Elementary and gymnasium facilities


  • 200 students from 15 months through 8th grade
  • 30% of students are from diverse ethnic backgrounds
  • 25% of the student body receives tuition assistance. This represents financial aid for students in grades K-8.


  • 4.5:1 Toddler
  • 9:1 Primary
  • 10:1 Elementary
  • 10:1 Middle School

Over 45% of faculty hold advanced degrees—our talented faculty are highly qualified; Toddler through Elementary teachers have been trained through accredited programs and granted American Montessori Society (AMS) or Association of Montessori Internationale (AMI) teaching certificates.

33% of faculty come from diverse ethnic backgrounds.


Our 12,500 square foot “green” Children’s House at 33 Eliot Street opened in 2014. It is home to our Toddler, Primary, and Kindergarten programs, and its five-acre lot includes a playground and outdoor garden/play spaces for each classroom.

Our Upper School facilities include a newly built school house at 37 Eliot Street, and Memorial Hall at 40 Eliot Street, as well as a playground, athletic fields, a courtyard, gardens, and a picnic area.

Our newly renovated Middle School building was converted from a transformed 18th Century tavern into a new facility, and has three large instructional spaces for Middle School academics, accommodating Science, Math, and History instruction. It also includes a large multi-purpose space that accommodates the school’s Music program. This building is located at 35 Eliot Street.

In 2020 our school completed construction and build-out of two new buildings, expanding the campus to include the new Lower Elementary Schoolhouse and a gymnasium. The project was a big step in the maturation of our school. Much like the Children’s House and the Middle School Tavern, the new Lower El classrooms are purpose-built spaces that are designed to support the Montessori pedagogy. The building provides new areas for art and design spaces to allow our students to expand their curious nature and problem solving skills. And the addition of a full size gymnasium has given our students  the chance to spread their wings and continue to develop their physical and gross motor skills.

Administrative Offices at 39 Eliot Street house the business, admissions, development, and marketing offices.

Upcoming Events

Sat 23

Parent/Guardian Field Games!

October 23 @ 3:30 pm - 7:00 pm
Sun 24

Parent/Guardian Field Games (Rain Date)!

October 24 @ 3:00 pm - 6:00 pm
Sat 30

Admissions Open House

October 30 @ 10:00 am - 1:00 pm
Nov 01

Admissions Open House

November 1 @ 10:30 am - 4:00 pm