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SCHOOL COMMUNITY·BOSTON GREEN ACADEMY HORACE MANN CHARTER SCHOOL·NCES 250052602703

Boston Green Academy Horace Mann Charter School

20 Warren St., Brighton, MA 02135 · (617) 635-9860 · Suffolk County
GRADES 07–12HIGH11-CITYCHARTERREGULAR SCHOOL426 STUDENTS
C-
allk12 Grade
Scored higher than 20% of Massachusetts public high schools
  • DTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • ·Beats expectations Not available for this school, so the grade uses the other parts.
  • A-Three-year trend Change in reading and math proficiency over the last three test years.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Massachusetts public high schools

Enrollment
426
High
STATE 777
Student : Teacher
10.3:1
42 FTE teachers
STATE 23.4:1
Free / Reduced Lunch
,
Title I proxy
Community
5
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 76916%
Grade 87217%
Grade 97919%
Grade 106716%
Grade 117016%
Grade 125613%
Ungraded133%
Student demographics
61%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
STATE 65% · US 70%
White
287%
STATE 51% · US 43%
Hispanic
19145%
STATE 26% · US 30%
Black
18243%
STATE 10% · US 15%
Asian
92%
STATE 7% · US 6%
Two+
133%
STATE 5% · US 5%
Native American
31%
STATE 0% · US 1%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
22052%
Female
20648%

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Test scores

MCAS 2024-25 . % Meeting or Exceeding Expectations
English Language Arts
18.4%
MA avg 43.8% . -9.6pp since 2016
Math
12.3%
MA avg 42.2% . +3.3pp since 2016

What this means: On the MCAS, Massachusetts's statewide test, about 18 of every 100 students at this school read and write at grade level and about 12 of 100 do math at grade level. Across all Massachusetts schools, those numbers are about 44 and 42. Reading and writing scores are down about 10 points since 2016, while math scores are up about 3 points.

MCAS results by year

School yearEnglish Language ArtsMath
2024-2518.4%12.3%
2023-2427.2%16.0%
2022-2325.4%9.4%
2021-2221.0%6.3%
2020-2119.4%7.6%
2018-1932.1%18.8%
2017-1825.0%9.0%
2016-1728.0%9.0%
% Meeting or Exceeding Expectations, all students and all tested grades.
Source: MCAS. All students, all grades. See all years and grades →

Where Boston Green Academy Horace Mann Charter School ranks

Among high schools
MeasureThis schoolIn MassachusettsIn Suffolk County
Math proficiency
ranked highest first
12.3%#298 of 327
▼ 7
#20 of 29
▼ 4
Reading proficiency
ranked highest first
18.4%#298 of 326
▼ 18
#16 of 29
▼ 4
3-year test score change
ranked biggest gain first
+1.7pp#52 of 315#8 of 26
Enrollment
ranked largest first
426#266 of 379#25 of 43
Students per teacher
ranked fewest first
10.3:1#81 of 325#15 of 35
Diversity index
ranked most diverse first
61.1%#62 of 325#9 of 35
Enrollment change since 2017-18
ranked steepest decline first
-9.6%#121 of 188#7 of 17
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
426
-83 (-16%) vs 2020
Student : Teacher
10.3:1
was 8.9:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2542641.610.3:1N/A
2023-2445942.710.8:1N/A
2022-2347646.610.2:1N/A
2020-21509578.9:1N/A
2017-1847140.611.6:1N/A
2015-164394110.7:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Boston Green Academy Horace Mann Charter School.

Since 2017-18: students down 10% (471 to 426); teachers up 2% (40.6 to 41.6).

About Boston Green Academy Horace Mann Charter School

Boston Green Academy Horace Mann Charter School is a small high school for students in Brighton, Massachusetts. It enrolls 426 students in 2024-25. The grades offered are 7 through 12. The school is 45% below the average for high schools in Massachusetts.

Boston Green Academy Horace Mann Charter School is its own local education agency in federal data.

Hispanic students make up 45% of enrollment at Boston Green Academy Horace Mann Charter School, the largest share of any group. The rest of enrollment is 43% Black, 7% White, 3% multiracial, and 2% Asian. Census estimates put the Hispanic share of Suffolk County's population at about 23%. On a 0 to 100 scale, the school's diversity index is 61, compared with 70 nationally.

Its ratio of 10.3:1 is based on 41.6 full-time-equivalent teachers. High schools in Massachusetts have an average ratio of 23.4:1.

Boston Green Academy Horace Mann Charter School earns a C- on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 20% of Massachusetts public high schools.

The county, Suffolk County, is where the school is located. The median household earns about $95,631 a year, the share of adults with a bachelor's degree or higher is 51%, and about 11% of people live in poverty. Counting Boston Green Academy Horace Mann Charter School, Suffolk County has 157 public schools.

Measured in a straight line, Brighton High School is less than a tenth of a mile from Boston Green Academy Horace Mann Charter School. Within five miles are at least 8 other public schools.

The school's federal locale classification is City: Large. Boston Green Academy Horace Mann Charter School holds a charter, making it a public charter school.

The school shrank from 509 students in 2020-21 to 426 in 2024-25. There were more students per teacher in 2024-25 (10.3:1) than in 2020-21 (8.9:1).

People who know Boston Green Academy Horace Mann Charter School can post here about homework, tutoring, and testing dates. Teachers and staff are welcome to share updates too.

Suffolk County at a glance

View full county profile
Population
785,121
Census ACS
Median income
$95,631
Household, ACS
Bachelor's+
51%
Adults 25+
Poverty rate
11%
Below federal line
Schools in county
157
75,679 students

Quick facts

School name
Boston Green Academy Horace Mann Charter School
District
Boston Green Academy Horace Mann Charter School
Address
20 Warren St., Brighton, MA 02135
Phone
(617) 635-9860
County
Suffolk County
Level
High
Grade range
07–12
Total enrollment
426
Teachers (FTE)
42
Student–teacher ratio
10.3:1
Locale
11-City: Large
NCES ID
250052602703
Charter school
Yes
Virtual school
No

Related schools

Other schools in Brighton
Nearby schools

Frequently asked questions

About Boston Green Academy Horace Mann Charter School
How large is Boston Green Academy Horace Mann Charter School?
Boston Green Academy Horace Mann Charter School enrolls approximately 426 students in grades 07-12.
What age range does Boston Green Academy Horace Mann Charter School serve?
Boston Green Academy Horace Mann Charter School serves students from grade 07 through grade 12.
What is the student-teacher ratio at Boston Green Academy Horace Mann Charter School?
The student-to-teacher ratio at Boston Green Academy Horace Mann Charter School is approximately 10.3:1 (42 FTE teachers).
What is the student diversity at Boston Green Academy Horace Mann Charter School?
Student demographics at Boston Green Academy Horace Mann Charter School are roughly 7% White, 45% Hispanic, 43% Black, 2% Asian, 3% Two or more.
Who oversees Boston Green Academy Horace Mann Charter School?
Boston Green Academy Horace Mann Charter School is overseen by Boston Green Academy Horace Mann Charter School in Suffolk County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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