St. Mary School in South Boon, MA, is a Catholic co–ed private school serving grades K through 8 with an enrollment of 183 students.
The school maintains a udent–teacher ratio of 17:1 with a teaching staff of 11 professionals in a central city setting.
Approximately 44% of the udent body represents diverse racial and ethnic backgrounds.
Mary School is a member of the National Catholic Educational Association (NCEA), reflecting its Catholic religious affiliation.
The school is located near other South Boon and Dorchester area K–8 private schools, providing families multiple educational options within one mile.
School Overview
School Type
Religious Affiliation
Grades Offered
Grades Kindergarten-8
Student Body
Total Students
183 students
Student Body Type
Co-ed
% Students of Color
44%
State avg.: 31%
Students by Grade
Academics and Faculty
Total Classroom Teachers
11 teachers
Student-Teacher Ratio
17:1
National avg.:
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Source: National Center for Education Statistics (NCES)
Frequently Asked Questions
When is the application deadline for St. Mary School?
The application deadline for St. Mary School is rolling (applications are reviewed as they are received year-round).
Nearby ²ÝÁñÉçÇø Schools
The nearest high school to St. Mary School is Cathedral High School (1.1 miles away)
The nearest elementary school and preschool is St. John Paul Lower Mills (0.5 miles away)
Show me:
School
Location
Miles
Quick Facts
St. John Paul Lower Mills
(Catholic)
2200 Columbia Rd
Dorchester Center, MA 02124
(617) 265-0019
Dorchester Center, MA 02124
(617) 265-0019
0.5 miles
Gr: PK-8 | 419 students Tuition & acceptance rate listed
275 E Cottage Street
Dorchester, MA 02125
(617) 282-2180
Dorchester, MA 02125
(617) 282-2180
0.7 miles
Gr: 6-8 | 25 students
371 W 4th St
South Boston, MA 02127
(617) 268-0750
South Boston, MA 02127
(617) 268-0750
0.7 miles
Gr: NS-6 | 78 students Avg. class size: 10 students Extracurrculars: 6 Tuition listed
Notre Dame Montessori
Daycare / Preschool (Catholic)
265 Mount Vernon St
Dorchester, MA 02125
(617) 282-0101
Dorchester, MA 02125
(617) 282-0101
0.9 miles
Gr: K | 24 students
Boston College High School ![Boston College High School Photo - The labyrinth in our main common area provides a metaphor for the reflective journey you take through life, as well as the internal discovery of yourself.]( "Boston College High School Photo - The labyrinth in our main common area provides a metaphor for the reflective journey you take through life, as well as the internal discovery of yourself.")
All-boys (Catholic)
150 William T Morrissey Blvd
Dorchester, MA 02125
(617) 474-5112
Dorchester, MA 02125
(617) 474-5112
1 miles
Gr: 7-8 | 315 students Avg. class size: 21 students Sports: 19 Tuition listed
School
Location
Miles
Quick Facts
Cathedral High School ![Cathedral High School Photo - Cathedral 7-12 High School students are challenged by a rigorous college preparatory curriculum and enriched through a selection of extracurricular activities, athletics, and support services.]( "Cathedral High School Photo - Cathedral 7-12 High School students are challenged by a rigorous college preparatory curriculum and enriched through a selection of extracurricular activities, athletics, and support services.")
(Catholic)
74 Union Park St
Boston, MA 02118
(617) 542-2325
Boston, MA 02118
(617) 542-2325
1.1 miles
Gr: 7-12 | 287 students Avg. class size: 15 students Sports: 9 | Extracurrculars: 9 Tuition & acceptance rate listed
Cristo Rey Boston High School
(Catholic)
100 Savin Hill Ave
Dorchester, MA 02125
(617) 825-2580
Dorchester, MA 02125
(617) 825-2580
1.1 miles
Gr: 9-12 | 200 students Avg. class size: 250 students Tuition & acceptance rate listed
Compass
Special Education School
290 Bowdoin St 294
Dorchester, MA 02122
(857) 220-2333
Dorchester, MA 02122
(857) 220-2333
1.4 miles
Gr: K-12 | 59 students
151 Commonwealth Avenue
Boston, MA 02116
(617) 266-7525
Boston, MA 02116
(617) 266-7525
2 miles
Gr: 9-12 | 158 students Avg. class size: 12 students Sports: 9 | Extracurrculars: 33 Tuition listed
247 Marlborough St
Boston, MA 02116
(603) 381-2003
Boston, MA 02116
(603) 381-2003
2.1 miles
Gr: 7-12 | 235 students
School
Location
Miles
Quick Facts
St. John Paul Lower Mills
(Catholic)
2200 Columbia Rd
Dorchester Center, MA 02124
(617) 265-0019
Dorchester Center, MA 02124
(617) 265-0019
0.5 miles
Gr: PK-8 | 419 students Tuition & acceptance rate listed
275 E Cottage Street
Dorchester, MA 02125
(617) 282-2180
Dorchester, MA 02125
(617) 282-2180
0.7 miles
Gr: 6-8 | 25 students
371 W 4th St
South Boston, MA 02127
(617) 268-0750
South Boston, MA 02127
(617) 268-0750
0.7 miles
Gr: NS-6 | 78 students Avg. class size: 10 students Extracurrculars: 6 Tuition listed
Boston College High School ![Boston College High School Photo - The labyrinth in our main common area provides a metaphor for the reflective journey you take through life, as well as the internal discovery of yourself.]( "Boston College High School Photo - The labyrinth in our main common area provides a metaphor for the reflective journey you take through life, as well as the internal discovery of yourself.")
All-boys (Catholic)
150 William T Morrissey Blvd
Dorchester, MA 02125
(617) 474-5112
Dorchester, MA 02125
(617) 474-5112
1 miles
Gr: 7-8 | 315 students Avg. class size: 21 students Sports: 19 Tuition listed
Cathedral High School ![Cathedral High School Photo - Cathedral 7-12 High School students are challenged by a rigorous college preparatory curriculum and enriched through a selection of extracurricular activities, athletics, and support services.]( "Cathedral High School Photo - Cathedral 7-12 High School students are challenged by a rigorous college preparatory curriculum and enriched through a selection of extracurricular activities, athletics, and support services.")
(Catholic)
74 Union Park St
Boston, MA 02118
(617) 542-2325
Boston, MA 02118
(617) 542-2325
1.1 miles
Gr: 7-12 | 287 students Avg. class size: 15 students Sports: 9 | Extracurrculars: 9 Tuition & acceptance rate listed
School
Location
Miles
Quick Facts
St. John Paul Lower Mills
(Catholic)
2200 Columbia Rd
Dorchester Center, MA 02124
(617) 265-0019
Dorchester Center, MA 02124
(617) 265-0019
0.5 miles
Gr: PK-8 | 419 students Tuition & acceptance rate listed
371 W 4th St
South Boston, MA 02127
(617) 268-0750
South Boston, MA 02127
(617) 268-0750
0.7 miles
Gr: NS-6 | 78 students Avg. class size: 10 students Extracurrculars: 6 Tuition listed
Notre Dame Montessori
Daycare / Preschool (Catholic)
265 Mount Vernon St
Dorchester, MA 02125
(617) 282-0101
Dorchester, MA 02125
(617) 282-0101
0.9 miles
Gr: K | 24 students
1525 Washington St
Boston, MA 02118
(857) 990-6525
Boston, MA 02118
(857) 990-6525
1.1 miles
Gr: NS-2 | 131 students Avg. class size: 16 students Tuition listed
790 Columbia Rd
Dorchester, MA 02125
(617) 265-0019
Dorchester, MA 02125
(617) 265-0019
1.1 miles
Gr: PK-8 | 283 students Tuition & acceptance rate listed
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Miles
Quick Facts
(Math: 60-64% | Reading: 55-59%)
Rank:
Rank:
8/
Top 30%10
628 Washington Street
Franklin, MA 02038
(508) 541-2140
Franklin, MA 02038
(508) 541-2140
9462.2 miles
Gr: K-5 | 321 students Student-Teacher Ratio: 12:1 Minority enrollment: 23%
(Math: 52% | Reading: 42%)
Rank:
Rank:
6/
Top 50%10
628 Washington Street
Franklin, MA 02038
(508) 541-2130
Franklin, MA 02038
(508) 541-2130
9462.2 miles
Gr: 6-8 | 358 students Student-Teacher Ratio: 10:1 Minority enrollment: 30%
(Math: 65-69% | Reading: 50-54%)
Rank:
Rank:
8/
Top 30%10
235 Wachusett Street
Franklin, MA 02038
(508) 541-5281
Franklin, MA 02038
(508) 541-5281
9462.8 miles
Gr: K-5 | 309 students Student-Teacher Ratio: 14:1 Minority enrollment: 32%
(Math: 60% | Reading: 52%)
Rank:
Rank:
8/
Top 30%10
120 Taunton Street
Wrentham, MA 02093
(508) 384-5435
Wrentham, MA 02093
(508) 384-5435
9462.9 miles
Gr: 4-6 | 357 students Student-Teacher Ratio: 11:1 Minority enrollment: 18%
(Math: 65-69% | Reading: 70-74%)
Rank:
Rank:
10/
Top 10%10
120 Taunton Street
Wrentham, MA 02093
(508) 384-5430
Wrentham, MA 02093
(508) 384-5430
9462.9 miles
Gr: PK-3 | 601 students Student-Teacher Ratio: 12:1 Minority enrollment: 18%
Recent Articles
Choosing Between a Traditional ²ÝÁñÉçÇø School and a Microschool
Compare traditional private schools and microschools to understand differences in academics, class size, flexibility, cost, and student experience before choosing the best educational fit.
The Second Visit Strategy: What to Look for After the Open House
A second campus visit can reveal what an open house cannot. Learn what to observe, which questions to ask, and how to determine whether a private school is truly the right fit for your child.
How Policy Changes Could Affect Your Tuition Bill in 2026
Learn how federal and state policy changes may affect private school tuition, financial aid, tax benefits, and your family's education budget.
