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SCHOOL COMMUNITY·ALLENTOWN CITY SD·NCES 420228002779

Mosser Elementary School

129 S Dauphin St, Allentown, PA 18109 · (484) 765-5881 · Lehigh County
GRADES PK–05ELEMENTARY12-CITYTITLE IREGULAR SCHOOL551 STUDENTS
Enrollment
551
Elementary
DISTRICT 497 · STATE 443
Student : Teacher
14.3:1
38 FTE teachers
DISTRICT 15.5:1 · STATE 13.1:1
Free / Reduced Lunch
103%
568 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
Kindergarten9417%
Grade 113424%
Grade 27514%
Grade 39317%
Grade 48816%
Grade 56712%
Student demographics
40%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 43% · STATE 59% · US 70%
White
356%
DISTRICT 6% · STATE 60% · US 43%
Hispanic
42176%
DISTRICT 74% · STATE 16% · US 30%
Black
428%
DISTRICT 11% · STATE 14% · US 15%
Asian
10%
DISTRICT 1% · STATE 5% · US 6%
Two+
529%
DISTRICT 8% · STATE 5% · US 5%
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
28652%
Female
26548%

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Test scores

PSSA + Keystone 2024-25 . % Proficient or Advanced
English Language Arts
15.8%
PA avg 51.1% . -7.5pp since 2023
Math
18.9%
PA avg 43.0% . +2.8pp since 2023

What this means: On the PSSA + Keystone, Pennsylvania's statewide test, about 16 of every 100 students at this school read and write at grade level and about 19 of 100 do math at grade level. Across all Pennsylvania schools, those numbers are about 51 and 43. Reading and writing scores are down about 8 points since 2023, while math scores are up about 3 points.

PSSA + Keystone results by year

School yearEnglish Language ArtsMath
2024-2515.8%18.9%
2023-2423.3%16.1%
% 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
21.6%
composite math + reading, all grades
Predicted
33.4%
based on PA schools with similar FRL share
Beats by
-11.8pp
below demographic expectation

What this means: About 22% of students here test proficient in math and reading, compared with the roughly 33% 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 →

Where Mosser Elementary School ranks

Among elementary schools
MeasureThis schoolIn PennsylvaniaIn Lehigh County
State test proficiency
ranked highest first
21.6%#1,273 of 1,396#36 of 43
Math proficiency
ranked highest first
18.9%#1,298 of 1,511#37 of 45
Reading proficiency
ranked highest first
15.8%#1,419 of 1,511#40 of 45
Enrollment
ranked largest first
551#385 of 1,638#15 of 50
Students per teacher
ranked fewest first
14.3:1#1,142 of 1,528#31 of 48
Diversity index
ranked most diverse first
39.7%#771 of 1,531#40 of 48
Free and reduced lunch
ranked highest share first
103%#169 of 1,600#6 of 48
Enrollment change since 2017-18
ranked fastest growth first
+0.4%#431 of 450#23 of 23
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.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
551
+80 (+17%) vs 2020
-12% since 1990-91, when it was 623
Student : Teacher
14.3:1
was 12.1:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2555138.414.3:1N/A
2023-2456840.214.1:1100% (568)
2022-234823713.0:1100% (482)
2020-214713912.1:199% (468)
2017-1854937.814.5:1100% (549)
2015-165823914.9:163% (369)
2010-116514514.5:192% (597)
2000-016673618.5:156% (376)
1990-916234015.6:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Mosser Elementary School.

About Mosser Elementary School

Among the schools in Allentown, Pennsylvania, is Mosser Elementary School, a mid-sized elementary school. The school teaches pre-K through 5 and enrolls 551 students. That puts enrollment 24% bigger than the 443-student average for elementary schools in Pennsylvania.

Mosser Elementary School belongs to Allentown City SD, a district of 23 schools and 16,674 students.

Of every 100 students at Mosser Elementary School, about 76 are Hispanic. The school is also 9% multiracial, 8% Black, and 6% White. The Hispanic share of the county population is lower, at 28%. On the diversity index, which measures the chance that two random students are from different groups, Mosser Elementary School scores 40%.

With 38.4 full-time-equivalent teachers, the student-to-teacher ratio is about 14.3:1. Elementary schools in Pennsylvania average 13.1:1, 1.3 fewer students per teacher than here.

In Pennsylvania, Mosser Elementary School is in the middle band of BeatsExpectations: 21.6% actual against a predicted 33.4%.

In the surrounding county, Lehigh County, median household income comes to about $80,079, a bachelor's degree or higher is held by about 34% of adults, and the poverty rate is about 8%. The county has 83 public schools and about 56,984 students.

Harrison-Morton Middle School, about 0.8 miles away, is the closest public school. Other public schools within five miles number at least 8. Mosser Elementary School is 5th of 9 nearby schools by average proficiency rate.

The school is inside a principal city with a population between 100,000 and 250,000, according to its NCES locale (City: Mid-size).

Enrollment in 2024-25 stood at 551, compared with 471 in 2020-21. Federal data show the ratio rising from 12.1:1 to 14.3:1.

Parents, students, and staff can share information on athletics, class schedules, and weather closures here. Members of the school community can share what they know.

Lehigh County at a glance

View full county profile
Population
378,792
Census ACS
Median income
$80,079
Household, ACS
Bachelor's+
34%
Adults 25+
Poverty rate
8%
Below federal line
Schools in county
83
56,984 students

Quick facts

School name
Mosser Elementary School
District
Allentown City SD
Address
129 S Dauphin St, Allentown, PA 18109
Phone
(484) 765-5881
County
Lehigh County
Level
Elementary
Grade range
PK–05
Total enrollment
551
Teachers (FTE)
38
Student–teacher ratio
14.3:1
Free and reduced lunch
568 (103%)
Locale
12-City: Mid-size
NCES ID
420228002779
Charter school
No
Virtual school
No

Related schools

Other schools in Allentown City SD
Other schools in Allentown
Nearby schools

Frequently asked questions

About Mosser Elementary School
What is the total enrollment at Mosser Elementary School?
Mosser Elementary School enrolls approximately 551 students in grades PK-05.
Is Mosser Elementary School an elementary, middle, or high school?
Mosser Elementary School is an elementary school covering grades PK-05.
How many students per teacher at Mosser Elementary School?
Approximately 14.3:1 students per teacher at Mosser Elementary School.
What is the student diversity at Mosser Elementary School?
Student demographics at Mosser Elementary School are roughly 6% White, 76% Hispanic, 8% Black, 0% Asian, 9% Two or more.
What district is Mosser Elementary School in?
Mosser Elementary School is part of Allentown City SD.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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