Very Good
#110 of 389 private schools in MA
Top 28% of private schools
Keystone Montessori School
Elementary School
55 MIDDLESEX ST, North Chelmsford, MA 01863
Estimated academic score. This school does not have standardized test data. Based on MA statewide data. Learn more
Enrollment
50
Student-Teacher
4.5:1
Score
7.1
Grades
Kindergarten – 6th
Enrollment
50
Student-Teacher
4.5:1
Score
7.1
Grades
Kindergarten – 6th
Updated
2021-22
Updated 2021-22
How this school compares
In North Chelmsford
#1 of 2
public schools
Massachusetts elementary schools
#33 of 200
About Keystone Montessori School
Keystone Montessori School is a charming elementary school nestled in the heart of North Chelmsford, Massachusetts. Serving students from kindergarten through sixth grade, the school houses an intimate community of 50 students with a student-teacher ratio of 4.5:1, allowing for personalized attention and support. With 11 full-time equivalent teachers dedicated to fostering learning, Keystone Montessori School offers a nurturing environment that emphasizes hands-on education and individualized instruction.
While the school's MySchoolScout rating suggests room for academic growth, it is important to note that Keystone Montessori places a strong emphasis on student development and holistic learning. The school's setting in a large suburban area provides students with a variety of educational opportunities beyond the classroom, such as field trips and community involvement. Keystone Montessori School thrives within its supportive neighborhood, offering families a close-knit and caring academic environment for their children to grow and flourish.
What Parents Should Know
With an enrollment of 50 students, Keystone Montessori School is a smaller school where families often find a close-knit community atmosphere. Smaller settings can mean more individual attention from teachers and staff, though they may offer fewer extracurricular options than larger schools.
With a student-teacher ratio of 4.5:1, Keystone Montessori School offers a notably low ratio compared to the national average. This typically means smaller class sizes and more opportunities for one-on-one interaction between students and teachers.
As a private school, Keystone Montessori School operates independently from the local public school district. Families considering this school should inquire about tuition costs, financial aid availability, and the admissions process. Private schools are not required to follow the same curriculum standards as public schools, which can be either an advantage or a consideration depending on your priorities.
Compare to Public Schools
BetaHow Keystone Montessori School compares to the 2 public schools in North Chelmsford, MA
Student Demographics
All Schools in North Chelmsford
| School | Rating |
|---|---|
| Keystone Montessori School (this school) | 7.1 |
| Charles D Harrington | 5.6 |
| Chelmsford High | 7.1 |
Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.
Score Breakdown
What This Rating Measures
This rating reflects classroom size, instructional time, student diversity, community resources, and school characteristics. Private schools are ranked against other private schools in MA.
Data Unavailable
View data sources
Score basis: Private school model
Data coverage: 80% of scoring components had data
Components scored: 4 of 5
Ranking pool: Private schools in MA
Test Scores
Test score data not yet available for this school.
Student Demographics NCES PSS (SY 2021-22)
Source: NCES Private School Survey (PSS)
Location
55 MIDDLESEX ST, North Chelmsford, MA 01863
Nearby Alternatives
Families considering Keystone Montessori School may also want to explore other elementary schools in the area. Dr Gertrude Bailey (rated 6.9/10, 2.4 miles away, in nearby Lowell), with a very similar rating. Another option is Bartlett Community Partnership (rated 6.8/10, 2.6 miles away, in nearby Lowell), with a very similar rating. Additionally, Joseph McAvinnue (rated 6.0/10, 2.4 miles away, in nearby Lowell), a more accessible option. For more schools in North Chelmsford, see our North Chelmsford schools guide .
Nearby Schools
20 within 3.1 mi| School | Distance | Rating |
|---|---|---|
| LIGHTHOUSE SCHOOL, INC North Chelmsford | 0.6 mi | 7.1 |
| Charles D Harrington North Chelmsford | 1.0 mi | 5.6 |
| Chelmsford High North Chelmsford | 1.1 mi | 7.1 |
| Gr Lowell Regional Vocational Technical Tyngsborough | 1.2 mi | 6.5 |
| Col Moses Parker School Chelmsford | 1.3 mi | 5.6 |
| Collegiate Charter School of Lowell Lowell | 1.0 mi | 2.9 |
| McCarthy Middle School Chelmsford | 1.4 mi | 5.8 |
| GREATER VISIONS CHILDRENS CENTER Chelmsford | 1.8 mi | — |
| Pawtucketville Memorial Lowell | 1.6 mi | 4.5 |
| Dr An Wang School Lowell | 1.7 mi | 4.2 |
| Innovation Academy Charter School Tyngsboro | 2.1 mi | 5.5 |
| COMMUNITY CHRISTIAN ACADEMY Lowell | 2.2 mi | 5.4 |
| James S Daley Middle School Lowell | 2.3 mi | 7.1 |
| Community Education Center Chelmsford | 2.6 mi | 5.0 |
| Dr Gertrude Bailey Lowell | 2.4 mi | 6.9 |
| Joseph McAvinnue Lowell | 2.4 mi | 6.0 |
| Charles W Morey Lowell | 2.4 mi | 4.7 |
| Bartlett Community Partnership Lowell | 2.6 mi | 6.8 |
| Center Elementary School Chelmsford | 3.1 mi | 6.0 |
| Brookside Elementary Dracut | 3.1 mi | 3.4 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 01863 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$136,284
Median Home Value
$477,900
Median Rent
$1,698/mo
Population
9,592
College Educated
48.6%
Homeownership
84.4%
Avg Commute
29 min
Poverty Rate
3.4%
Median Age
42.8
Community Profile
The community surrounding Keystone Montessori School has a median household income of $136,284. It is a well-educated community where 49% of adults hold a bachelor's degree or higher. The median home value in the area is $477,900, with a median rent of $1,698/month. The local poverty rate of 3.4% is relatively low. The average commute for residents is 29 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| New Marlborough Central Sheffield, MA | 7.1 |
| Hawlemont Regional Charlemont, MA | 7.0 |
| SUMMIT MONTESSORI SCHOOL Framingham, MA | 7.0 |
| PIONEER VALLEY MONTESSORI SCHOOL Springfield, MA | 7.3 |
| VINEYARD MONTESSORI SCHOOL Vineyard Haven, MA | 6.8 |
| Emma L Miller Elementary School Savoy, MA | 7.5 |
Frequently Asked Questions
Common questions about Keystone Montessori School
What grades does Keystone Montessori School serve?
Keystone Montessori School serves students in grades Kindergarten through 6th.
How many students attend Keystone Montessori School?
Keystone Montessori School has an enrollment of approximately 50 students.
What is the student-teacher ratio at Keystone Montessori School?
The student-teacher ratio at Keystone Montessori School is 4.5:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.
How does Keystone Montessori School rank in MA?
Keystone Montessori School is ranked #110 out of 389 private schools in MA.
What is Keystone Montessori School's MySchoolScout rating?
Keystone Montessori School has a composite rating of 7.1 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
Is Keystone Montessori School a private school?
Yes, Keystone Montessori School is a private coeducational school with a Nonsectarian affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.
Is Keystone Montessori School a religious school?
No, Keystone Montessori School is a nonsectarian (non-religious) private school.
Explore More Schools
Neighborhood Context
Quick Facts NCES PSS (SY 2021-22)
- Grades
- Kindergarten – 6th
- Enrollment
- 50
- Gender Split
- 70% M / 30% F
- Student-Teacher Ratio
- 4.5:1
- Teachers (FTE)
- 11
- Type
- private
- Coed Status
- coed
- Affiliation
- Nonsectarian
- School Day
- 6.5 hours
- Days Per Year
- 171 days
- Setting
- Large Suburb
- County
- MIDDLESEX
- Phone
- (978) 251-2929
- Data Year
- 2022–2023
Resources & Links
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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