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SCHOOL COMMUNITY·UPPER DARBY SD·NCES 422432000042

Primos Elementary School

861 Bunting Ln, Primos, PA 19018 · (610) 622-6755 · Delaware County
GRADES KG–05ELEMENTARY21-SUBURBTITLE IREGULAR SCHOOL499 STUDENTS
C
allk12 Grade
Scored higher than 30% of Pennsylvania public elementary schools
  • CTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • C+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 Pennsylvania public elementary schools

Enrollment
499
Elementary
DISTRICT 527 · STATE 443
Student : Teacher
11.3:1
44 FTE teachers
DISTRICT 12.0:1 · STATE 13.1:1
Free / Reduced Lunch
93%
464 students
DISTRICT 102% · STATE 75%
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

GradeStudentsShare
Kindergarten8818%
Grade 18317%
Grade 29719%
Grade 39018%
Grade 48016%
Grade 56112%

This year's kindergarten class (88) is 44% larger than its 5th grade class (61).

Student demographics
70%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 71% · STATE 59% · US 70%
White
11623%
DISTRICT 14% · STATE 60% · US 43%
Hispanic
459%
DISTRICT 19% · STATE 16% · US 30%
Black
23347%
DISTRICT 46% · STATE 14% · US 15%
Asian
469%
DISTRICT 15% · STATE 5% · US 6%
Two+
5812%
DISTRICT 6% · STATE 5% · US 5%
Native American
10%
DISTRICT 0% · 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
26754%
Female
23246%

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Test scores

PSSA + Keystone 2024-25 . % Proficient or Advanced
English Language Arts
33.7%
PA avg 51.1% . -0.4pp since 2023
Math
36.6%
PA avg 43.0% . +3.8pp since 2023

What this means: On the PSSA + Keystone, Pennsylvania's statewide test, about 34 of every 100 students at this school read and write at grade level and about 37 of 100 do math at grade level. Across all Pennsylvania schools, those numbers are about 51 and 43. Reading and writing scores have held steady since 2023, while math scores are up about 4 points.

PSSA + Keystone results by year

School yearEnglish Language ArtsMath
2024-2533.7%36.6%
2023-2434.1%32.8%
% Proficient or Advanced, all students and all tested grades.
Source: PSSA + Keystone. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
38.3%
composite math + reading, all grades
Predicted
37.7%
based on PA schools with similar FRL share
Beats by
+0.6pp
above demographic expectation

What this means: About 38% of students here test proficient in math and reading, compared with the roughly 38% typical for Pennsylvania 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 Pennsylvania'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 Primos Elementary School

Primos Elementary School's state test result (38.3% proficient) is higher than 4 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Primos Elementary School this school49993.0%38.3%
Shawmont School
Philadelphia
47188.5%43.8%
Pfeiffer-Burleigh School
Erie
69088.7%14.7%
Duquesne Elementary School
Duquesne
46097.0%12.6%
Diehl School
Erie
44199.3%15.4%
Jefferson Elementary School
Erie
44798.0%15.9%
Matched among Pennsylvania 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 Primos Elementary School ranks

Among elementary schools
MeasureThis schoolIn PennsylvaniaIn Delaware County
State test proficiency
ranked highest first
38.3%#1,085 of 1,396#43 of 59
Math proficiency
ranked highest first
36.6%#1,050 of 1,511
▲ 31
#41 of 69
no change
Reading proficiency
ranked highest first
33.7%#1,137 of 1,511
▲ 67
#49 of 69
▲ 1
Enrollment
ranked largest first
499#535 of 1,638#33 of 75
Students per teacher
ranked fewest first
11.3:1#271 of 1,528#22 of 74
Diversity index
ranked most diverse first
69.8%#103 of 1,531#10 of 74
Free and reduced lunch
ranked highest share first
93.0%#616 of 1,600#24 of 73
Enrollment change since 2017-18
ranked fastest growth first
+6.4%#270 of 450#15 of 25
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 2024-25
Enrollment
499
0 (0%) vs 2020
+16% since 2000-01, when it was 429
Student : Teacher
11.3:1
was 13.9:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-254994411.3:193% (464)
2023-244644011.6:1100% (464)
2022-2346537.412.4:1100% (465)
2020-214993613.9:199% (496)
2017-1846937.412.6:156% (263)
2015-164574011.4:160% (276)
2010-114463811.7:133% (145)
2000-014292715.9:121% (88)
Source: NCES Common Core of Data. Rows are the federal collections on file for Primos Elementary School.

Since 2017-18: students up 6% (469 to 499); teachers up 18% (37.4 to 44).

About Primos Elementary School

Primos Elementary School, located in Primos, Pennsylvania, is a medium-sized elementary school. The school's 499 students are in kindergarten through 5.

District-wide, Upper Darby SD has 13 schools and 12,173 students.

Primos Elementary School's enrollment has no majority group, and Black students are the largest at 47%. Other students are 23% White, 12% multiracial, 9% Asian, and 9% Hispanic. By comparison, Delaware County residents are about 22% Black. The chance that two students picked at random at Primos Elementary School belong to different racial or ethnic groups, known as the diversity index, is 70%.

The school has about 11.3 students per teacher and 44 full-time-equivalent teachers. The average ratio among elementary schools in Pennsylvania is 13.1:1, higher than at this school. About 93% of enrolled students meet the income rules for free or reduced-price lunch. The rate at public schools in Delaware County averages 58%, lower than here.

allk12 grades Primos Elementary School a C. The grade compares the school only with Pennsylvania public elementary schools, because each state gives its own test.

The school's average proficiency rate on state tests is 38.3%. For its free or reduced-price lunch share, the predicted value is 37.7%.

Census estimates describe Delaware County this way: median household income is about $89,546, about 42% of adults have at least a bachelor's degree, and roughly 7% of residents are in poverty. Federal data list 113 public schools in Delaware County, with a combined enrollment of about 74,663.

The shortest distance from Primos Elementary School to another public school is about 0.6 miles, to Westbrook Park Elementary School. The five-mile area around Primos Elementary School holds at least 8 other public schools. The nearest schools with test data average 30.2%, lower than Primos Elementary School's 38.3%.

Federal records code the school's setting as Suburb: Large.

Enrollment has been fairly stable: 499 in 2020-21 and 499 in 2024-25. Over the same period, the student-to-teacher ratio fell to 11.3:1, from 13.9:1.

To ask about school safety, transportation, and start times, start a discussion on this page. Posting is open to anyone connected to the school.

Delaware County at a glance

View full county profile
Population
579,222
Census ACS
Median income
$89,546
Household, ACS
Bachelor's+
42%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
113
74,663 students

Quick facts

School name
Primos Elementary School
District
Upper Darby SD
Address
861 Bunting Ln, Primos, PA 19018
Phone
(610) 622-6755
County
Delaware County
Level
Elementary
Grade range
KG–05
Total enrollment
499
Teachers (FTE)
44
Student–teacher ratio
11.3:1
Free and reduced lunch
464 (93%)
Locale
21-Suburb: Large
NCES ID
422432000042
Charter school
No
Virtual school
No

Related schools

Other schools in Upper Darby SD
Nearby schools

Frequently asked questions

About Primos Elementary School
How many students attend Primos Elementary School?
Primos Elementary School enrolls approximately 499 students in grades KG-05.
What age range does Primos Elementary School serve?
Primos Elementary School serves students from grade KG through grade 05.
How many students per teacher at Primos Elementary School?
Approximately 11.3:1 students per teacher at Primos Elementary School.
What is the student diversity at Primos Elementary School?
Student demographics at Primos Elementary School are roughly 23% White, 9% Hispanic, 47% Black, 9% Asian, 12% Two or more.
What district is Primos Elementary School in?
Primos Elementary School is part of Upper Darby SD.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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