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SCHOOL COMMUNITY·CANON-MCMILLAN SD·NCES 420489004217

Canon-McMillan SHS

314 Elm St Extension, Canonsburg, PA 15317 · (724) 745-1400 · Washington County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,660 STUDENTS
B+
allk12 Grade
Scored higher than 70% of Pennsylvania public high schools
  • A-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • B-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 high schools

Enrollment
1,660
High
DISTRICT 599 · STATE 738
Student : Teacher
16.9:1
98 FTE teachers
DISTRICT 15.2:1 · STATE 12.8:1
Free / Reduced Lunch
30%
504 students
DISTRICT 29% · STATE 75%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 938923%
Grade 1041425%
Grade 1145527%
Grade 1240224%
Student demographics
28%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 30% · STATE 59% · US 70%
White
1,39884%
DISTRICT 83% · STATE 60% · US 43%
Hispanic
573%
DISTRICT 3% · STATE 16% · US 30%
Black
684%
DISTRICT 4% · STATE 14% · US 15%
Asian
352%
DISTRICT 3% · STATE 5% · US 6%
Two+
966%
DISTRICT 6% · STATE 5% · US 5%
Native American
50%
DISTRICT 0% · STATE 0% · US 1%
Pacific Islander
10%
DISTRICT 0% · STATE 0% · US 0%
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
82750%
Female
83350%

School pathway

Feeds from
Canon-McMillan Middle School07–08
Based on grade levels within Canon-McMillan SD. Attendance zones can vary; confirm enrollment with the district.

Discussions

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Test scores

PSSA + Keystone 2024-25 . % Proficient or Advanced
English Language Arts
64.2%
PA avg 51.1% . -12.5pp since 2023
Math
52.5%
PA avg 43.0% . -5.1pp since 2023

What this means: On the PSSA + Keystone, Pennsylvania's statewide test, about 64 of every 100 students at this school read and write at grade level and about 53 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 13 points since 2023, while math scores are down about 5 points.

PSSA + Keystone results by year

School yearEnglish Language ArtsMath
2024-2564.2%52.5%
2023-2476.7%57.6%
% 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
62.8%
composite math + reading, all grades
Predicted
64.6%
based on PA schools with similar FRL share
Beats by
-1.8pp
below demographic expectation

What this means: About 63% of students here test proficient in math and reading, compared with the roughly 65% 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 Canon-McMillan SHS

Canon-McMillan SHS's state test result (62.8% proficient) is higher than 4 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Canon-McMillan SHS this school1,66030.4%62.8%
North Hills High School
Pittsburgh
1,44330.3%55.8%
Norwin High School
North Huntingdon
1,67130.2%74.6%
Boyertown Area SHS
Boyertown
2,05230.2%62.6%
Plum SHS
Plum
1,22031.8%54.7%
South Western SHS
Hanover
1,38034.8%57.6%
Matched among Pennsylvania high 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 Canon-McMillan SHS ranks

Among high schools
MeasureThis schoolIn PennsylvaniaIn Washington County
State test proficiency
ranked highest first
62.8%#131 of 576#3 of 14
Math proficiency
ranked highest first
52.5%#181 of 626
▼ 72
#3 of 14
▼ 1
Reading proficiency
ranked highest first
64.2%#243 of 626
▼ 131
#4 of 14
▼ 1
Enrollment
ranked largest first
1,660#61 of 713#1 of 16
Students per teacher
ranked fewest first
16.9:1#520 of 601#14 of 14
Diversity index
ranked most diverse first
28.4%#316 of 604#5 of 14
Free and reduced lunch
ranked highest share first
30.4%#525 of 619#13 of 14
Enrollment change since 2017-18
ranked fastest growth first
+1.5%#195 of 221#6 of 7
Ranked against other public high 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
1,660
-56 (-3%) vs 2020
+37% since 1990-91, when it was 1,211
Student : Teacher
16.9:1
was 19.7:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-251,66098.116.9:130% (504)
2023-241,6839717.4:130% (504)
2022-231,65589.918.4:126% (424)
2020-211,7168719.7:122% (373)
2017-181,63585.119.2:119% (316)
2015-161,5458218.8:122% (337)
2010-111,4788517.4:120% (296)
2000-011,1637914.7:113% (149)
1990-911,2119313.0:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Canon-McMillan SHS.

Since 2017-18: students up 2% (1,635 to 1,660); teachers up 15% (85.1 to 98.1).

About Canon-McMillan SHS

Canon-McMillan SHS is a large high school found in Canonsburg, Pennsylvania. School enrollment was 1,660 students in 2024-25, in grades 9 through 12. The average among high schools in Pennsylvania is roughly 738 students; this school is 125% bigger than that.

Canon-McMillan SHS sits within Canon-McMillan SD, which has 9 schools and 5,390 students.

White students are the large majority at Canon-McMillan SHS, with 84% of enrollment. Next come 6% multiracial, 4% Black, 3% Hispanic, and 2% Asian. The chance that two students picked at random at Canon-McMillan SHS belong to different racial or ethnic groups, known as the diversity index, is 28%.

The count of teachers at Canon-McMillan SHS is 98.1 full-time equivalents, for a ratio of 16.9:1. The average ratio among high schools in Pennsylvania is 12.8:1, lower than at this school. Around 30% of the school's students qualify for free or reduced-price meals. It compares with 49% for public schools in Washington County.

Measured against Pennsylvania public high schools, Canon-McMillan SHS receives a B+. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.

Canon-McMillan SHS's actual average proficiency rate on state tests (62.8%) and its predicted rate (64.6%) put it outside the top and bottom 10% of Pennsylvania schools.

County data help place the school in context: in Washington County, median household income is about $78,958, the share of adults with a bachelor's degree or higher is 33%, and roughly 6% of residents are in poverty. Canon-McMillan SHS is among the 56 public schools in Washington County.

South Central Elementary School is the nearest neighboring public school, about 0.6 miles away. A five-mile radius around the school includes at least 8 other public schools. Canon-McMillan SHS ranks 6th of 8 among nearby schools on average proficiency, with 62.8% against a local average of 66.1%.

Locale: Suburb: Large. In NCES terms, the school is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Enrollment was 1,716 in 2020-21 and 1,660 in 2024-25, a decrease of 56 students. There were fewer students per teacher in 2024-25 (16.9:1) than in 2020-21 (19.7:1).

Questions about science fairs, picture day, and bus routes can be posted here. Reviews and ratings from people who know the school are welcome.

Washington County at a glance

View full county profile
Population
210,042
Census ACS
Median income
$78,958
Household, ACS
Bachelor's+
33%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
56
26,079 students

Quick facts

School name
Canon-McMillan SHS
District
Canon-McMillan SD
Address
314 Elm St Extension, Canonsburg, PA 15317
Phone
(724) 745-1400
County
Washington County
Level
High
Grade range
09–12
Total enrollment
1,660
Teachers (FTE)
98
Student–teacher ratio
16.9:1
Free and reduced lunch
504 (30%)
Locale
21-Suburb: Large
NCES ID
420489004217
Charter school
No
Virtual school
No

Related schools

Other schools in Canon-McMillan SD
Other schools in Canonsburg
Nearby schools

Frequently asked questions

About Canon-McMillan SHS
How large is Canon-McMillan SHS?
Canon-McMillan SHS enrolls approximately 1,660 students in grades 09-12.
What grades does Canon-McMillan SHS serve?
Canon-McMillan SHS serves grades 09-12.
What is the student-teacher ratio at Canon-McMillan SHS?
The student-to-teacher ratio at Canon-McMillan SHS is approximately 16.9:1 (98 FTE teachers).
What is the racial breakdown of students at Canon-McMillan SHS?
At Canon-McMillan SHS, the student body is approximately 84% White, 3% Hispanic, 4% Black, 2% Asian, 6% Two or more.
Is Canon-McMillan SHS public or private?
Canon-McMillan SHS is a public K-12 school, overseen by Canon-McMillan SD.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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