Enrollment
234
Elementary
DISTRICT 228 · STATE 443
SCHOOL COMMUNITY·YOUGH SD·NCES 422115004507
Mendon Elementary School
164 Route 31, Ruffsdale, PA 15679 · (724) 872-6484 · Westmoreland County
GRADES KG–04ELEMENTARY41-RURALTITLE IREGULAR SCHOOL234 STUDENTS
A-
allk12 Grade
Scored higher than 81% of Pennsylvania public elementary schools
- B+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 Pennsylvania public elementary schools
Student : Teacher
13.5:1
17 FTE teachers
DISTRICT 13.0:1 · STATE 13.1:1
Free / Reduced Lunch
57%
134 students
DISTRICT 49% · 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, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 43 | 18% |
| Grade 1 | 58 | 25% |
| Grade 2 | 32 | 14% |
| Grade 3 | 55 | 24% |
| Grade 4 | 46 | 20% |
This year's kindergarten class (43) is 7% smaller than its 4th grade class (46).
Student demographics
6%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 15% · STATE 59% · 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
School pathway
Students here typically continue to
Based on grade levels within Yough SD. Attendance zones can vary; confirm enrollment with the district.
Test scores
PSSA + Keystone 2024-25 . % Proficient or AdvancedEnglish Language Arts
54.0%
PA avg 51.1% . -11.6pp since 2023
Math
66.0%
PA avg 43.0% . +1.5pp since 2023
What this means: On the PSSA + Keystone, Pennsylvania's statewide test, about 54 of every 100 students at this school read and write at grade level and about 66 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 12 points since 2023, while math scores are up about 2 points.
PSSA + Keystone results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 54.0% | 66.0% |
| 2023-24 | 65.6% | 64.5% |
% 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 · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
67.1%
composite math + reading, all grades
Predicted
53.1%
based on PA schools with similar FRL share
Beats by
+14.0pp
above demographic expectation
What this means: About 67% of students here test proficient in math and reading, compared with the roughly 53% 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 Mendon Elementary School
Mendon Elementary School's state test result (67.1% proficient) is higher than 4 of the 4 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Mendon Elementary School this school | 234 | 57.3% | 67.1% |
| Williamsburg Community Elementary School Williamsburg | 243 | 60.1% | 48.8% |
| Avis Elementary School Jersey Shore | 234 | 54.3% | 54.5% |
| Northwest Area Intermediate School Shickshinny | 260 | 55.0% | 45.7% |
| Indian Valley Intrmd School Reedsville | 212 | 54.7% | 54.5% |
| Northwest Area Primary School Shickshinny | 215 | 61.9% | N/A |
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 Mendon Elementary School ranks
Among elementary schools| Measure | This school | In Pennsylvania | In Westmoreland County |
|---|---|---|---|
| State test proficiency ranked highest first | 67.1% | #386 of 1,396 | #17 of 37 |
| Math proficiency ranked highest first | 66.0% | #373 of 1,511 ▼ 5 | #16 of 38 ▲ 2 |
| Reading proficiency ranked highest first | 54.0% | #621 of 1,511 ▼ 168 | #25 of 38 ▼ 3 |
| Enrollment ranked largest first | 234 | #1,454 of 1,638 | #39 of 43 |
| Students per teacher ranked fewest first | 13.5:1 | #929 of 1,528 | #16 of 39 |
| Diversity index ranked most diverse first | 5.9% | #1,502 of 1,531 | #39 of 39 |
| Free and reduced lunch ranked highest share first | 57.3% | #862 of 1,600 | #17 of 42 |
| Enrollment change since 2017-18 ranked steepest decline first | -0.4% | #1,031 of 1,045 | #33 of 33 |
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
234
+21 (+10%) vs 2020
-30% since 1990-91, when it was 334
Student : Teacher
13.5:1
was 15.2:1
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 | 234 | 17.3 | 13.5:1 | 57% (134) |
| 2023-24 | 242 | 16.8 | 14.4:1 | 55% (134) |
| 2022-23 | 226 | 16.8 | 13.5:1 | 52% (117) |
| 2020-21 | 213 | 14 | 15.2:1 | 51% (108) |
| 2017-18 | 235 | 16.8 | 14.0:1 | 54% (126) |
| 2015-16 | 242 | 14 | 17.3:1 | 50% (122) |
| 2010-11 | 264 | 18 | 14.7:1 | 45% (119) |
| 2000-01 | 456 | 23 | 19.8:1 | 38% (171) |
| 1990-91 | 334 | 15 | 22.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Mendon Elementary School.
Since 2017-18: students unchanged (235 to 234); teachers up 3% (16.8 to 17.3).
About Mendon Elementary School
In Ruffsdale, Pennsylvania, part of Westmoreland County, Mendon Elementary School is an elementary school. Enrollment stands at 234 students, covering kindergarten through 4. The school is 47% below the average for elementary schools in Pennsylvania.
Yough SD, which runs Mendon Elementary School, has 5 schools and 1,818 students.
White students account for 97% of the school's enrollment. Its diversity index, the chance that two randomly chosen students belong to different racial or ethnic groups, is 6%.
A staff of 17.3 full-time-equivalent teachers puts the student-to-teacher ratio at 13.5:1. That is in line with the 13.1:1 average for elementary schools in Pennsylvania. By family income, 57% of students are eligible for free or reduced-price lunch.
Mendon Elementary School earns an A- on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 81% of Pennsylvania public elementary schools.
Mendon Elementary School scores 67.1% on state tests, averaged across results. The predicted figure, based on its student poverty level, is 53.1%.
In Westmoreland County, where the school is located, median household income comes to about $74,109, the share of adults with a bachelor's degree or higher is 33%, and roughly 7% of residents are in poverty. The county has 85 public schools and about 41,302 students.
Yough Intrmd/MS School is about 0.1 miles away, making it the nearest public school. Other public schools within five miles number 3. The average proficiency across nearby scored schools is 58.1%; Mendon Elementary School's is 67.1%, ranking 3rd of 7.
Mendon Elementary School is coded as Rural: Fringe in federal locale data.
Over 4 years, enrollment rose by 21 students, from 213 to 234. Over the same period, the student-to-teacher ratio dropped to 13.5:1, from 15.2:1.
Mendon Elementary School has a community page on allk12 for topics such as pickup and drop-off, after-school programs, and teacher feedback. Teachers and staff are welcome to share updates too.
Westmoreland County at a glance
View full county profilePopulation
352,500
Census ACS
Median income
$74,109
Household, ACS
Bachelor's+
33%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
85
41,302 students
Quick facts
Related schools
Other schools in Yough SD
- Yough SHSHigh · 592 students
- Yough Intrmd/MS SchoolMiddle · 541 students
- H W Good Elementary SchoolElementary · 270 students
- West Newton Elementary SchoolElementary · 181 students
Other Mendon Elementary schools
One other US public school is named Mendon Elementary. Mendon Elementary School is the largest of the 2.
- Mendon Elementary SchoolMENDON, MI · 210 students
Nearby schools
- Yough Intrmd/MS School0.1 mi · 541
- Stanwood Elementary School4.9 mi · 518
- Southmoreland SHS4.9 mi · 566
- Southmoreland Primary Center5.0 mi · 277
- Central Westmoreland Career and Technology Center5.1 mi · 5
- West Newton Elementary School5.2 mi · 181
Frequently asked questions
About Mendon Elementary SchoolWhat is the total enrollment at Mendon Elementary School?
Mendon Elementary School enrolls approximately 234 students in grades KG-04.
What grades does Mendon Elementary School serve?
Mendon Elementary School serves grades KG-04.
What is the student-teacher ratio at Mendon Elementary School?
The student-to-teacher ratio at Mendon Elementary School is approximately 13.5:1 (17 FTE teachers).
What is the racial breakdown of students at Mendon Elementary School?
At Mendon Elementary School, the student body is approximately 97% White, 1% Hispanic, 0% Black, 2% Two or more.
Is Mendon Elementary School public or private?
Mendon Elementary School is a public K-12 school, overseen by Yough SD.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.