Very Good
#110 of 388 private schools in MA
Top 28% of private schools
Keystone Montessori School
Elementary School
55 MIDDLESEX ST, North Chelmsford, MA 01863
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
Data vintage
2021-22
Data vintage2021-22
How this school compares
Massachusetts private schools
#110 of 388
In North Chelmsford
#1 of 2
public schools
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Keystone Montessori School
Elementary School in North Chelmsford · grades Kindergarten – 6th. Start here, then compare fit against nearby and district options.
Lighthouse School, Inc
0.6 mi away. Use as a geographic alternative in the same move search.
Charles D Harrington
1.0 mi away. Use as a geographic alternative in the same move search.
About Keystone Montessori School
Keystone Montessori School is a private elementary school in North Chelmsford, MA. Keystone Montessori School serves approximately 50 students, and covers grades Kindergarten-6th, and has a 4.5:1 student-teacher ratio. Keystone Montessori School has a current MySchoolScout rating of 7.1 out of 10 and ranks #110 of 388 private schools in MA.
- This school 7.1 · Very Good
- MA avg 6.3
What Parents Should Know
At 50 students, Keystone Montessori School is on the smaller side. That usually buys more individual attention and teachers who know every kid by name, with the trade-off of fewer electives and extracurriculars than a larger school can staff. Ask what activities it actually offers.
At 4.5:1 students to teachers, Keystone Montessori School sits well below the national average. Smaller classes like that usually mean more one-on-one time between students and teachers.
Keystone Montessori School is private, so it runs independently of the local district and sets its own curriculum. That freedom cuts both ways depending on what you want for your child. If you're considering it, start with the practical questions: tuition, financial aid, and how admissions work.
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 | 5.2 |
| Chelmsford High | 7.2 |
Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.
Score Breakdown
PreliminaryWhat 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. Bartlett Community Partnership (rated 7.4/10, 2.6 miles away, in nearby Lowell), which scores slightly higher. Another option is Dr Gertrude Bailey (rated 6.9/10, 2.4 miles away, in nearby Lowell), with a very similar rating. Additionally, Joseph McAvinnue (rated 6.7/10, 2.4 miles away, in nearby Lowell), with a comparable rating. 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 | 5.2 |
| Chelmsford High North Chelmsford | 1.1 mi | 7.2 |
| Gr Lowell Regional Vocational Technical Tyngsborough | 1.2 mi | 7.9 |
| Col Moses Parker School Chelmsford | 1.3 mi | 6.4 |
| Collegiate Charter School of Lowell Lowell | 1.0 mi | 2.8 |
| McCarthy Middle School Chelmsford | 1.4 mi | 6.4 |
| GREATER VISIONS CHILDRENS CENTER Chelmsford | 1.8 mi | — |
| Pawtucketville Memorial Lowell | 1.6 mi | 4.4 |
| Dr An Wang School Lowell | 1.7 mi | 4.2 |
| Innovation Academy Charter School Tyngsboro | 2.1 mi | 6.3 |
| COMMUNITY CHRISTIAN ACADEMY Lowell | 2.2 mi | 5.4 |
| James S Daley Middle School Lowell | 2.3 mi | 8.0 |
| Community Education Center Chelmsford | 2.6 mi | 3.2 |
| Dr Gertrude Bailey Lowell | 2.4 mi | 6.9 |
| Joseph McAvinnue Lowell | 2.4 mi | 6.7 |
| Charles W Morey Lowell | 2.4 mi | 4.8 |
| Bartlett Community Partnership Lowell | 2.6 mi | 7.4 |
| Center Elementary School Chelmsford | 3.1 mi | 3.4 |
| Brookside Elementary Dracut | 3.1 mi | 3.3 |
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
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| SUMMIT MONTESSORI SCHOOL Framingham, MA | 7.0 |
| VINEYARD MONTESSORI SCHOOL Vineyard Haven, MA | 6.8 |
| PIONEER VALLEY MONTESSORI SCHOOL Springfield, MA | 7.4 |
| APPLE ORCHARD SCHOOL Brookline, MA | 7.6 |
| NEW COVENANT SCHOOL Arlington, MA | 6.5 |
| Emma L Miller Elementary School Savoy, MA | 7.7 |
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 ranks #110 of 388 private schools in MA.
What is Keystone Montessori School's MySchoolScout rating?
Keystone Montessori School has a current MySchoolScout rating of 7.1 out of 10. This score combines the level-appropriate components shown in the rating breakdown; 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.
Neighborhood Context
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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 County
- Phone
- (978) 251-2929
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