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SCHOOL COMMUNITY·INTERBORO SD·NCES 421217004847

Tinicum Sch

First & Seneca Streets, Essington, PA 19029 · (610) 521-4450 · Delaware County
GRADES 01–08ELEMENTARY21-SUBURBTITLE IREGULAR SCHOOL325 STUDENTS
Enrollment
325
Elementary
DISTRICT 457 · STATE 443
Student : Teacher
9.5:1
34 FTE teachers
DISTRICT 11.3:1 · STATE 13.1:1
Free / Reduced Lunch
56%
183 students
DISTRICT 54% · STATE 75%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Grade 1
36
Grade 2
40
Grade 3
36
Grade 4
29
Grade 5
49
Grade 6
42
Grade 7
44
Grade 8
49
Student demographics
White
21666%
DISTRICT 61% · STATE 60%
Hispanic
196%
DISTRICT 8% · STATE 16%
Black
4012%
DISTRICT 18% · STATE 14%
Asian
206%
DISTRICT 6% · STATE 5%
Two+
268%
DISTRICT 8% · STATE 5%
Native American
41%
DISTRICT 0% · STATE 0%
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
17353%
Female
15247%

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Test scores

PSSA + Keystone 2024-25 . % Proficient or Advanced
English Language Arts
40.5%
PA avg 51.1% . -12.8pp since 2023
Math
34.6%
PA avg 43.0% . -5.0pp since 2023
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
45.5%
composite math + reading, all grades
Predicted
53.5%
based on PA schools with similar FRL share
Beats by
-7.9pp
below demographic expectation
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
325
-21 (-6%) vs 2017
Student : Teacher
9.5:1
was 11.9:1
% White
66%
was 80%
% Hispanic
6%
was 5%
% Black
12%
was 4%
% Asian
6%
was 4%
Source: NCES Common Core of Data

About Tinicum Sch

Tinicum Sch, a modestly sized primary school in Essington, Pennsylvania, run under Interboro SD, instructs 325 students, covering grades 1 through 8. Compared to the state average of about 443 students per school, that is 27% below typical.

Interboro SD comprises 6 schools with combined enrollment of 3,366 students; Tinicum Sch is among them.

For racial and ethnic makeup, Tinicum Sch logs that White students make up the majority at 66%; the rest breaks down as 12% Black, 8% multiracial, 6% Asian, 6% Hispanic. Compared to Delaware County overall, the school's racial mix sits in roughly the same range.

Looking at school resources, Staff filings list 34 full-time-equivalent teachers, which works out to roughly 9.5:1 students per teacher. Statewide, the average ratio sits near 13.1:1, putting Tinicum Sch tighter than the state norm the norm. About 56% of enrolled students meet the income threshold for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator.

Adjusting for the school's free-and-reduced-lunch share, Tinicum Sch performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 53.5%, the actual is 45.5%, a residual of -7.9 points.

In the surrounding community, the surrounding county (Delaware County) logs that median household earnings sit near $89,546, roughly 42% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 7%. Tinicum Sch is one of 113 public schools in Delaware County (combined enrollment of about 74,663 students).

Norwood Sch is the nearest neighboring public school, about 1.1 miles from this campus. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts Tinicum Sch at 5th of 6; the average score across the group is 49.1%.

The campus sits in a suburban setting.

Looking at the recent track record. Tinicum Sch's enrollment has contracted 6% since 2018, when it stood at 346 (now 325). Over the same period, the White share contracted from 80% to 66%. Class-load math has tightened: from 11.9:1 in 2018 to 9.5:1 in 2025.

Within the allk12 community for this school, recent activity here tends to focus on school events, parent volunteer needs, and clubs. Parents, students, alumni, and staff are welcome to weigh in.

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
Tinicum Sch
District
Interboro SD
Address
First & Seneca Streets, Essington, PA 19029
Phone
(610) 521-4450
County
Delaware County
Level
Elementary
Grade range
01–08
Total enrollment
325
Teachers (FTE)
34
Student–teacher ratio
9.5:1
Free/Reduced lunch
183 (56%)
Locale
21-Suburb: Large
NCES ID
421217004847
Charter school
No
Virtual school
No

Related schools

Other schools in Interboro SD
Nearby schools

Frequently asked questions

About Tinicum Sch
What is the total enrollment at Tinicum Sch?
Tinicum Sch enrolls approximately 325 students in grades 01-08.
What grades does Tinicum Sch serve?
Tinicum Sch serves grades 01-08.
What is the student-teacher ratio at Tinicum Sch?
The student-to-teacher ratio at Tinicum Sch is approximately 9.5:1 (34 FTE teachers).
What is the student diversity at Tinicum Sch?
Student demographics at Tinicum Sch are roughly 66% White, 6% Hispanic, 12% Black, 6% Asian, 8% Two or more.
What district is Tinicum Sch in?
Tinicum Sch is part of Interboro SD.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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