- Enrollment
- 912
- Students per teacher
- 13.4:1
- Resource Index
- 34/100
High school (grades 9-12) · Portland, ME
Casco Bay High School
Federal NCES profile for Casco Bay High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 230993000603
👥 S:T ratio 48
🌟 Gifted program 30
🎓 Counselors 75
📋 Attendance 15
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Casco Bay High School earns 42/100 on the Resource Investment Index, with class sizes larger than 85% of Maine schools. It is also more racially and ethnically mixed than most Maine schools.
- #1 of 4
- high schools in Portland · Resource Index
- 42
- Resource Index · Typical
- 13.1:1
- large classes for Maine
- 33.0%
- free-lunch eligible
Casco Bay High School has class sizes larger than 85% of Maine schools. Computed live against every Maine school reporting to NCES.
By Resource Investment Index, Casco Bay High School ranks #1 of 4 high schools in Portland, ME.
School address
District: Portland Public Schools · Maine
NCES ID 230993000603 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-1 students YoY
Casco Bay High School held near 381 students from 2022-23 to 2023-24 (-1 headcount).
Teacher FTE lost 29.8 → 28.2 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-1 students YoY 230993000603 · Portland, ME High · SMALL · TRAD
379 enr · 13.1:1 · 33.0% lunch · RII 42
Nearest enrollment peer: Portland High School (912 students)
Casco Bay High School held near 381 students from 2022-23 to 2023-24 (-1 headcount). Teacher FTE lost 29.8 → 28.2 across the same CCD years. Read with this school → · District book → · Maine schools → · Find another →
Casco Bay High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Portland High
Portland High School
912 students
- Deering High S
Deering High School
850 students
- Harrison Lyset
Harrison Lyseth Elem School
489 students
- Amanda C Rowe
Amanda C Rowe School
470 students
- Lyman Moore Mi
Lyman Moore Middle School
470 students
- This school
Casco Bay High School
379 students
What this shows Casco Bay High School reports 379 students on the CCD universe file.
How Casco Bay High School compares
Casco Bay High School held steady on CCD headcount: ratios and free-lunch share vs Maine and U.S. means.
| Metric | This school | vs Maine | Maine avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.1:1 | ▲ 18% | 11.1:1 | 15.7:1 |
| Free-lunch eligible | 33.0% | ▼ 3% | 34.0% | 51.7% |
| Enrollment | 379 | top 26% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.1:1
Leaner classes than 66% of US schools, among the more generously staffed nationally.
379
Bigger than 44% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
33.0%
free-lunch eligible
- 3% below the Maine average of 34.0%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
13.1:1
students per teacher
- 18% above state mean
Top 85% in Maine - lower ratio than 15% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
34.0%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$21,356
per pupil, district-wide
- above Maine avg of $20,907
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors3.0 FTE
Per 126 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 29 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 7.7 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 51.6%
African American 28.3%
Hispanic or Latino 8.2%
Asian 6.3%
Two or More 4.8%
American Indian / Alaska Native 0.5%
Native Hawaiian / Pacific Islander 0.3%
Largest group: White at 51.6% of enrollment.
Student-body diversity index 64.1/100
Simpson diversity index - at 64.1, Casco Bay High School is more mixed than the Maine school average of 20.6.
Programs
AP courses offered 6
District finance for Portland Public Schools reports $21,356 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Casco Bay High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Portland High School | Larger | Similar economic need | Similar S:T ratio |
| Deering High School | Larger | Higher economic need | Similar S:T ratio |
| Harrison Lyseth Elem School | Larger | Similar economic need | Similar S:T ratio |
| Amanda C Rowe School | Similar size | Similar economic need | Similar S:T ratio |
| Lyman Moore Middle School | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Casco Bay High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 850
- Students per teacher
- 14.2:1
- Resource Index
- 35/100
- Enrollment
- 489
- Students per teacher
- 11.9:1
- Resource Index
- 65/100
- Enrollment
- 470
- Students per teacher
- 11.8:1
- Resource Index
- 59/100
- Enrollment
- 470
- Students per teacher
- 9.2:1
- Resource Index
- 47/100
Similar high schools in Portland
3 comparable high schools (grades 9-12) serving the same city.
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~379 students)
Frequently asked questions about Casco Bay High School
How many students attend Casco Bay High School?
Casco Bay High School has 379 students enrolled. It is a high school in Portland, ME. CCD year-over-year: 382 (2022-23) → 381 (2023-24), nearly flat (-1).
What is the student-teacher ratio at Casco Bay High School?
The student-teacher ratio at Casco Bay High School is 13.1:1, which is 18% higher than the Maine average of 11.1:1 and 17% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Casco Bay High School?
33.0% of students at Casco Bay High School are eligible for free lunch, compared to the Maine average of 34.0%.
What is the racial and ethnic makeup of Casco Bay High School?
The largest demographic group at Casco Bay High School is White at 51.6% of enrollment, in Portland, ME. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.1/100.
What is the Resource Investment Index for Casco Bay High School?
Casco Bay High School has a Resource Investment Index of 42/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Casco Bay High School rank among high schools in Portland?
By Resource Investment Index, Casco Bay High School ranks #1 of 4 high schools in Portland, ME. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Portland on the city page.
What other schools are in Portland Public Schools?
Besides Casco Bay High School, Portland Public Schools also operates Portland High School (912 students), Deering High School (850 students), and Harrison Lyseth Elem School (489 students). See the Portland Public Schools district page for the complete list.