Children's Own School has been a Montessori preschool tradition since 1942. We provide a carefully planned, stimulating Montessori environment to help children develop within themselves the foundational habits, attitudes, skills and ideas which are essential for a lifetime of creative thinking and learning. COS recognizes that each child has a unique nature and, with that, the capacity to become a successful learner.
We promote opportunities for independence, perseverance, and creativity. We guide children to self-directed learning and discovery. We emphasive kindness and graciousness in our classroom communities.
We believes that parents and teachers are partners working together for the benefit of each child.
Our primary goal is to provide each child with an excellent Montessori education using the principles established by Dr. Maria Montessori and sanctioned by the Association Montessori Internationale.
Quick Facts (2026)
- School Type: Montessori School
- Grades: Prekindergarten-Kindergarten
- Enrollment: 86 students
- Yearly Tuition: $20,300
- Average class size: 20 students
- Application Deadline: Jan. 31
- Source: Verified school update
School Overview
School Type
Religious Affiliation
Grades Offered
Grades Prekindergarten-Kindergarten
Year Founded
1942
School Calendar
Student Body
Total Students
86 students
Student Body Type
Co-ed
% Students of Color
27%
State avg.: 31%
Students by Grade
Academics and Faculty
Total Classroom Teachers
7 teachers
Student-Teacher Ratio
12:1
National avg.:
% Faculty w/Advanced Degree
70%
Average Class Size
20 students
Classroom Dress Code
Casual
Tuition and Acceptance Rate
Admission Deadline
Jan. 31
Yearly Tuition Cost
$20,300
% on Financial Aid
13%
Application URL
School Notes
- We serve 89 children in 4 primary classrooms (2.9 - 6.0 years old) and 1 preprimary program (children 22 months-2.8 months). All classrooms are staffed with a Montessori trained teacher and a classroom assistant. We offer half day, school day, and limited extended day enrollment options.
Source: Verified school update
Frequently Asked Questions
How much does Childrens Own School cost?
Childrens Own School's tuition is approximately $20,300 for private students.
When is the application deadline for Childrens Own School?
The application deadline for Childrens Own School is Jan. 31.
Related Schools
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People that viewed Childrens Own School also viewed these schools: Tufts Educational Daycare Center, Cambridge Friends School, Boston Children's School, Kingsley Montessori School and The Greenhouse School.
The nearest high school to Childrens Own School is Arlington Catholic High School (1.7 miles away)
The nearest elementary school is St. Raphael School (1.2 miles away)
The nearest preschool is St. Mary's School (1.1 miles away)
Show me:
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School
Location
Miles
Quick Facts
Tufts Educational Daycare Center
Daycare / Preschool
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Cambridge, MA 02140
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3.5 miles
Gr: PK-8 Sports: 3 | Extracurrculars: 8 Tuition & acceptance rate listed
8 Whittier Place
Boston, MA 02114
(617) 367-6239
Boston, MA 02114
(617) 367-6239
6.1 miles
Gr: PK-3 | 31 students Avg. class size: 8 students Acceptance rate listed
26 Exeter Street
Boston, MA 02116
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Boston, MA 02116
(617) 226-4927
6.7 miles
Gr: NS-6 | 301 students Avg. class size: 17 students Sports: 14 Tuition listed
145 Loring Ave
Salem, MA 01970
(978) 745-4549
Salem, MA 01970
(978) 745-4549
12.8 miles
Gr: NS | 20 students
School
Location
Miles
Quick Facts
5 Cadbury Road
Cambridge, MA 02140
(617) 354-3880
Cambridge, MA 02140
(617) 354-3880
3.5 miles
Gr: PK-8 Sports: 3 | Extracurrculars: 8 Tuition & acceptance rate listed
8 Whittier Place
Boston, MA 02114
(617) 367-6239
Boston, MA 02114
(617) 367-6239
6.1 miles
Gr: PK-3 | 31 students Avg. class size: 8 students Acceptance rate listed
26 Exeter Street
Boston, MA 02116
(617) 226-4927
Boston, MA 02116
(617) 226-4927
6.7 miles
Gr: NS-6 | 301 students Avg. class size: 17 students Sports: 14 Tuition listed
701 Cabot St
Beverly, MA 01915
(978) 927-8811
Beverly, MA 01915
(978) 927-8811
15.6 miles
Gr: NS-6 | 117 students Avg. class size: 12 students Sports: 2 | Extracurrculars: 2 Tuition listed
School
Location
Miles
Quick Facts
Tufts Educational Daycare Center
Daycare / Preschool
165 Holland St
Somerville, MA 02144
(617) 627-3412
Somerville, MA 02144
(617) 627-3412
2.8 miles
Gr: PK-K | 44 students
5 Cadbury Road
Cambridge, MA 02140
(617) 354-3880
Cambridge, MA 02140
(617) 354-3880
3.5 miles
Gr: PK-8 Sports: 3 | Extracurrculars: 8 Tuition & acceptance rate listed
8 Whittier Place
Boston, MA 02114
(617) 367-6239
Boston, MA 02114
(617) 367-6239
6.1 miles
Gr: PK-3 | 31 students Avg. class size: 8 students Acceptance rate listed
26 Exeter Street
Boston, MA 02116
(617) 226-4927
Boston, MA 02116
(617) 226-4927
6.7 miles
Gr: NS-6 | 301 students Avg. class size: 17 students Sports: 14 Tuition listed
145 Loring Ave
Salem, MA 01970
(978) 745-4549
Salem, MA 01970
(978) 745-4549
12.8 miles
Gr: NS | 20 students
School
Location
Miles
Quick Facts
St. Mary's School
Daycare / Preschool (Catholic)
162 Washington St
Winchester, MA 01890
(781) 729-5515
Winchester, MA 01890
(781) 729-5515
1.1 miles
Gr: PK-K | 54 students Avg. class size: 15 students Tuition listed
The Wilder School
Alternative School
162r Washington St
Winchester, MA 01890
(781) 281-8948
Winchester, MA 01890
(781) 281-8948
1.1 miles
Gr: Inquire with school | 2 students
516 High St
Medford, MA 02155
(781) 483-3373
Medford, MA 02155
(781) 483-3373
1.2 miles
Gr: PK-8 | 336 students Avg. class size: 15 students Tuition listed
132 High St
Medford, MA 02155
(781) 396-3636
Medford, MA 02155
(781) 396-3636
1.6 miles
Gr: NS-8 | 479 students Avg. class size: 17 students Tuition listed
16 Medford St
Arlington, MA 02474
(781) 646-7770
Arlington, MA 02474
(781) 646-7770
1.7 miles
Gr: 9-12 | 456 students Avg. class size: 21 students Sports: 16 | Extracurrculars: 9 Tuition & acceptance rate listed
School
Location
Miles
Quick Facts
16 Medford St
Arlington, MA 02474
(781) 646-7770
Arlington, MA 02474
(781) 646-7770
1.7 miles
Gr: 9-12 | 456 students Avg. class size: 21 students Sports: 16 | Extracurrculars: 9 Tuition & acceptance rate listed
5 Lowell Avenue
Winchester, MA 01890
(781) 729-3489
Winchester, MA 01890
(781) 729-3489
1.9 miles
Gr: K-9 | 124 students Sports: 1 | Extracurrculars: 2 Tuition listed
Greater Boston Academy
(Seventh Day Adventist)
108 Pond Street
Stoneham, MA 02180
(781) 438-4253
Stoneham, MA 02180
(781) 438-4253
2.5 miles
Gr: NS-12 | 198 students Avg. class size: 20 students Tuition listed
1 Matignon Road
Cambridge, MA 02140
(617) 876-1212
Cambridge, MA 02140
(617) 876-1212
2.6 miles
Gr: 9-12 | 304 students Avg. class size: 18 students Sports: 15 | Extracurrculars: 16 Tuition listed
45 Matignon Road
Cambridge, MA 02140
(617) 499-1451
Cambridge, MA 02140
(617) 499-1451
2.6 miles
Gr: NS-12 | 540 students Avg. class size: 14 students Sports: 4 | Extracurrculars: 56 Tuition listed
School
Location
Miles
Quick Facts
516 High St
Medford, MA 02155
(781) 483-3373
Medford, MA 02155
(781) 483-3373
1.2 miles
Gr: PK-8 | 336 students Avg. class size: 15 students Tuition listed
132 High St
Medford, MA 02155
(781) 396-3636
Medford, MA 02155
(781) 396-3636
1.6 miles
Gr: NS-8 | 479 students Avg. class size: 17 students Tuition listed
St. Agnes School
(Catholic)
39 Medford Street
Arlington, MA 02474
(781) 643-9031
Arlington, MA 02474
(781) 643-9031
1.8 miles
Gr: PK-8 | 317 students Avg. class size: 16 students Sports: 6 | Extracurrculars: 6 Tuition & acceptance rate listed
5 Lowell Avenue
Winchester, MA 01890
(781) 729-3489
Winchester, MA 01890
(781) 729-3489
1.9 miles
Gr: K-9 | 124 students Sports: 1 | Extracurrculars: 2 Tuition listed
34 Winter Street
Arlington, MA 02474
(781) 641-1346
Arlington, MA 02474
(781) 641-1346
2.2 miles
Gr: NS-8 | 251 students Avg. class size: 18 students Sports: 3 | Extracurrculars: 2 Tuition & acceptance rate listed
School
Location
Miles
Quick Facts
St. Mary's School
Daycare / Preschool (Catholic)
162 Washington St
Winchester, MA 01890
(781) 729-5515
Winchester, MA 01890
(781) 729-5515
1.1 miles
Gr: PK-K | 54 students Avg. class size: 15 students Tuition listed
516 High St
Medford, MA 02155
(781) 483-3373
Medford, MA 02155
(781) 483-3373
1.2 miles
Gr: PK-8 | 336 students Avg. class size: 15 students Tuition listed
132 High St
Medford, MA 02155
(781) 396-3636
Medford, MA 02155
(781) 396-3636
1.6 miles
Gr: NS-8 | 479 students Avg. class size: 17 students Tuition listed
St. Agnes School
(Catholic)
39 Medford Street
Arlington, MA 02474
(781) 643-9031
Arlington, MA 02474
(781) 643-9031
1.8 miles
Gr: PK-8 | 317 students Avg. class size: 16 students Sports: 6 | Extracurrculars: 6 Tuition & acceptance rate listed
Creative Corner Childrens Learning Center
Daycare / Preschool
11 Sheridan Cir
Winchester, MA 01890
(781) 721-5566
Winchester, MA 01890
(781) 721-5566
1.9 miles
Gr: PK-K | 102 students
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Miles
Quick Facts
(Math: 65-69% | Reading: 70-74%)
Rank:
Rank:
10/
Top 10%10
88 Summer Street
Medway, MA 02053
(508) 533-3227
Medway, MA 02053
(508) 533-3227
9472.9 miles
Gr: 9-12 | 622 students Student-Teacher Ratio: 14:1 Minority enrollment: 21%
9 Lovering Street
Medway, MA 02053
(508) 533-3243
Medway, MA 02053
(508) 533-3243
9473.1 miles
Gr: PK-1 | 353 students Student-Teacher Ratio: 13:1 Minority enrollment: 26%
(Math: 47% | Reading: 51%)
Rank:
Rank:
6/
Top 50%10
7 Park Rd
Millis, MA 02054
(508) 376-7003
Millis, MA 02054
(508) 376-7003
9473.6 miles
Gr: PK-5 | 603 students Student-Teacher Ratio: 15:1 Minority enrollment: 25%
(Math: 65-69% | Reading: 75-79%)
Rank:
Rank:
10/
Top 10%10
245 Plain Street
Millis, MA 02054
(508) 376-7010
Millis, MA 02054
(508) 376-7010
9473.6 miles
Gr: 9-12 | 286 students Student-Teacher Ratio: 11:1 Minority enrollment: 19%
(Math: 55% | Reading: 57%)
Rank:
Rank:
8/
Top 30%10
245 Plain Street
Millis, MA 02054
(508) 376-7014
Millis, MA 02054
(508) 376-7014
9473.6 miles
Gr: 6-8 | 267 students Student-Teacher Ratio: 12:1 Minority enrollment: 18%
School Reviews
5 3/1/2024
I attended this school from 1964 to 1966, and I loved it! It's nice to see that it's still in the same big old house surrounded by huge trees.
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