1
Enrollment
1,305
Elementary
DISTRICT 541 · STATE 443
SCHOOL COMMUNITY·NEW YORK CITY GEOGRAPHIC DISTRICT #15·NCES 360009202818
PS 321 WILLIAM PENN
180 7TH AVE, BROOKLYN, NY 11215 · (718) 499-2412 · Kings County
GRADES PK–05ELEMENTARY11-CITYREGULAR SCHOOL1,305 STUDENTS
A
allk12 Grade
Scored higher than 93% of New York public elementary schools
- A+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- A-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded New York public elementary schools
Student : Teacher
16.1:1
81 FTE teachers
DISTRICT 12.3:1 · STATE 12.8:1
Free / Reduced Lunch
6%
77 students
DISTRICT 61% · STATE 58%
Community
1
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Pre-K | 69 | 5% |
| Kindergarten | 215 | 16% |
| Grade 1 | 211 | 16% |
| Grade 2 | 219 | 17% |
| Grade 3 | 218 | 17% |
| Grade 4 | 186 | 14% |
| Grade 5 | 187 | 14% |
This year's kindergarten class (215) is 15% larger than its 5th grade class (187).
Student demographics
54%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 73% · STATE 72% · US 70%
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
Test scores
NYS Assessments 2024-25 . % Proficient (Level 3 + Level 4)English Language Arts
89.0%
NY avg 58.3% . +5.0pp since 2023
Math
91.0%
NY avg 57.4% . +0.0pp since 2023
What this means: On the NYS Assessments, New York's statewide test, about 89 of every 100 students at this school read and write at grade level and about 91 of 100 do math at grade level. Across all New York schools, those numbers are about 58 and 57. Reading and writing scores are up about 5 points since 2023, while math scores have held steady.
NYS Assessments results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 89.0% | 91.0% |
| 2023-24 | 84.0% | 91.0% |
% Proficient (Level 3 + Level 4), all students and all tested grades.
Source: NYS Assessments. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
85.4%
composite math + reading, all grades
Predicted
72.8%
based on NY schools with similar FRL share
Beats by
+12.6pp
above demographic expectation
What this means: About 85% of students here test proficient in math and reading, compared with the roughly 73% typical for New York schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among New York's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like PS 321 WILLIAM PENN
PS 321 WILLIAM PENN's state test result (85.4% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| PS 321 WILLIAM PENN this school | 1,305 | 5.9% | 85.4% |
| PS 58 CARROLL (THE) BROOKLYN | 753 | 10.8% | 79.8% |
| PS 87 WILLIAM SHERMAN NEW YORK | 751 | 13.2% | 85.1% |
| BRONXVILLE ELEMENTARY SCHOOL BRONXVILLE | 688 | 4.5% | 84.0% |
| FLORAL PARK-BELLEROSE SCHOOL FLORAL PARK | 904 | 15.6% | 72.4% |
| PS 29 JOHN M HARRIGAN BROOKLYN | 708 | 13.6% | 85.3% |
Matched among New York elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where PS 321 WILLIAM PENN ranks
Among elementary schools| Measure | This school | In New York | In Kings County |
|---|---|---|---|
| State test proficiency ranked highest first | 85.4% | #87 of 2,335 | #15 of 290 |
| Math proficiency ranked highest first | 91.0% | #114 of 2,342 ▼ 20 | #21 of 290 ▼ 4 |
| Reading proficiency ranked highest first | 89.0% | #90 of 2,343 ▼ 28 | #16 of 290 ▼ 5 |
| Enrollment ranked largest first | 1,305 | #6 of 2,585 | #2 of 306 |
| Students per teacher ranked fewest first | 16.1:1 | #2,177 of 2,338 | #222 of 249 |
| Diversity index ranked most diverse first | 53.9% | #1,066 of 2,388 | #133 of 263 |
| Free and reduced lunch ranked highest share first | 5.9% | #2,480 of 2,534 | #300 of 300 |
| Enrollment change since 2017-18 ranked steepest decline first | -7.9% | #1,282 of 1,757 | #201 of 225 |
Ranked against other public elementary 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 2024-25Enrollment
1,305
+18 (+1%) vs 2020
-5% since 2010-11, when it was 1,376
Student : Teacher
16.1:1
was 16.7:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 1,305 | 81 | 16.1:1 | 6% (77) |
| 2023-24 | 1,234 | 81 | 15.2:1 | 7% (82) |
| 2022-23 | 1,216 | 80 | 15.2:1 | 6% (77) |
| 2020-21 | 1,287 | 77 | 16.7:1 | 7% (84) |
| 2017-18 | 1,417 | 80 | 17.7:1 | 7% (102) |
| 2015-16 | 1,465 | 87 | 16.8:1 | 7% (108) |
| 2010-11 | 1,376 | 86 | 16.0:1 | 11% (157) |
Source: NCES Common Core of Data. Rows are the federal collections on file for PS 321 WILLIAM PENN.
About PS 321 WILLIAM PENN
In BROOKLYN, New York, part of Kings County, PS 321 WILLIAM PENN is an elementary school. The school serves 1,305 students in pre-K through 5 in 2024-25. The average among elementary schools in New York is roughly 443 students; this school is 195% above that.
PS 321 WILLIAM PENN is one school in a 51-school district, NEW YORK CITY GEOGRAPHIC DISTRICT #15, which enrolls 25,925 students.
Roughly 65% of students at PS 321 WILLIAM PENN are White. Other groups make up 13% multiracial, 10% Hispanic, 9% Asian, and 2% Black. County-wide, 38% of Kings County residents are White. The school's diversity index is 54%, meaning two students picked at random have a 54% chance of belonging to different racial or ethnic groups.
Federal data list 81 full-time-equivalent teachers at PS 321 WILLIAM PENN in 2024-25, for a ratio of 16.1:1. That is 3.3 students per teacher above the 12.8:1 average for elementary schools in New York. The school's rate of free or reduced-price lunch eligibility is 6%. That is lower than the 79% average for public schools in Kings County.
allk12 grades PS 321 WILLIAM PENN an A. The grade compares the school only with New York public elementary schools, because each state gives its own test.
PS 321 WILLIAM PENN's actual average proficiency rate on state tests (85.4%) and its predicted rate (72.8%) put it outside the top and bottom 10% of New York schools.
Kings County census figures show that the median household income is $80,263, roughly 42% of adults have a four-year degree or more, and about 15% of residents live below the federal poverty line. There are 583 public schools in Kings County, enrolling about 291,697 students in all.
The closest other public school is JOHN JAY SCHOOL FOR LAW, about 0.2 miles away. PS 321 WILLIAM PENN has at least 8 other public schools within five miles. Ranking the closest schools with test data puts PS 321 WILLIAM PENN at 3rd of 9.
In the federal locale system, PS 321 WILLIAM PENN is coded City: Large, for schools inside a principal city with a population of 250,000 or more.
Over 4 years, enrollment stayed close to where it was, going from 1,287 to 1,305.
Questions about enrollment questions, class placement, and PTA news can be posted here. Questions from prospective families are welcome too.
Kings County at a glance
View full county profilePopulation
2,631,580
Census ACS
Median income
$80,263
Household, ACS
Bachelor's+
42%
Adults 25+
Poverty rate
15%
Below federal line
Schools in county
583
291,697 students
Quick facts
Related schools
Other schools in NEW YORK CITY GEOGRAPHIC DISTRICT #15
- SUNSET PARK HIGH SCHOOLHigh · 1,348 students
- MS 51 WILLIAM ALEXANDERMiddle · 1,038 students
- PS 230 DORIS L COHENElementary · 925 students
- PS 130 PARKSIDE (THE)Elementary · 891 students
- BROOKLYN HIGH SCHOOL OF THE ARTSHigh · 890 students
- JHS 88 PETER ROUGETMiddle · 843 students
Other schools in BROOKLYN
- BROOKLYN TECHNICAL HIGH SCHOOLHigh · 5,848 students
- FORT HAMILTON HIGH SCHOOLHigh · 4,044 students
- JAMES MADISON HIGH SCHOOLHigh · 3,983 students
- MIDWOOD HIGH SCHOOLHigh · 3,657 students
- EDWARD R MURROW HIGH SCHOOLHigh · 3,503 students
- FRANKLIN DELANO ROOSEVELT HIGH SCHOOLHigh · 3,403 students
Nearby schools
- JOHN JAY SCHOOL FOR LAW0.2 mi · 450
- CYBERARTS STUDIO ACADEMY0.2 mi · 264
- MILLENNIUM BROOKLYN HIGH SCHOOL0.2 mi · 682
- PARK SLOPE COLLEGIATE0.2 mi · 512
- PS 39 HENRY BRISTOW0.3 mi · 365
- MS 51 WILLIAM ALEXANDER0.3 mi · 1,038
Frequently asked questions
About PS 321 WILLIAM PENNWhat is the total enrollment at PS 321 WILLIAM PENN?
PS 321 WILLIAM PENN enrolls approximately 1,305 students in grades PK-05.
What age range does PS 321 WILLIAM PENN serve?
PS 321 WILLIAM PENN serves students from grade PK through grade 05.
How many students per teacher at PS 321 WILLIAM PENN?
Approximately 16.1:1 students per teacher at PS 321 WILLIAM PENN.
How diverse is PS 321 WILLIAM PENN?
PS 321 WILLIAM PENN reports a student body of 65% White, 10% Hispanic, 2% Black, 9% Asian, 13% Two or more.
What district is PS 321 WILLIAM PENN in?
PS 321 WILLIAM PENN is part of NEW YORK CITY GEOGRAPHIC DISTRICT #15.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.