Casco Bay High School is a public high school in Portland, Maine, United States. Casco Bay High School describes itself as an Expeditionary Learning educational experience, which the school describes as being based on the Outward Bound learning system.
Serving 379 students in grades 9-12, Casco Bay High School ranks in the top 50% of all schools in Maine for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 45-49% (which is approximately equal to the Maine state average of 49%). The percentage of students achieving proficiency in reading/language arts is 85-89% (which is higher than the Maine state average of 84%).
The student-teacher ratio of 13:1 is higher than the Maine state level of 11:1.
Minority enrollment is 48% of the student body (majority Black), which is higher than the Maine state average of 15% (majority Black and Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 379 students
- Student-Teacher Ratio: 13:1
- Minority Enrollment: 48%
- Graduation Rate: ≥95% (Top 1% in ME)
- Overall Testing Rank: Top 50%
- Math Proficiency: 45-49% (Btm 50%)
- Reading Proficiency: 85-89% (Top 30%)
- Science Proficiency: 40-44% (Top 50%)
- Source: National Center for Education Statistics (NCES), ME Dept. of Education
Top Rankings
Casco Bay High School ranks among the top 20% of public schools in Maine for:
Category
Attribute
Most improved public schools
Graduation Rate
Diversity
School Overview
Casco Bay High School's student population of 379 students has stayed relatively flat over five school years.
The teacher population of 29 teachers has grown by 11% over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
379 students
Total Classroom Teachers
29 teachers
Year Founded
2005
Colors
Black, Teal
School Calendar
School Motto
'Get Smart to Do Good'
School Rankings
Casco Bay High School ranks within the top 50% of all 500 schools in Maine (based off of combined math and reading proficiency testing data).
The diversity score of Casco Bay High School is 0.65, which is more than the diversity score at state average of 0.28. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#190 out of 500 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
45-49%
49%
Reading/Language Arts Test Scores (% Proficient)
85-89%
84%
Science Test Scores (% Proficient)
40-44%
37%
Student-Teacher Ratio
13:1
11:1
American Indian
1%
1%
Asian
6%
1%
Hispanic
8%
4%
Black
28%
5%
White
52%
85%
Hawaiian
n/a
n/a
Two or more races
5%
4%
All Ethnic Groups
Graduation Rate
≥95%
86%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
32%
39%
Eligible for Reduced Lunch
22%
7%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), ME Dept. of Education
School Notes
- School Mascot: Cougar
Frequently Asked Questions
What is Casco Bay High School's ranking?
Casco Bay High School is ranked #190 out of 500 schools, which ranks it among the top 50% of public schools in Maine.
What schools are Casco Bay High School often compared to?
Casco Bay High Schoolis often viewed alongside schools like Deering High School, Portland High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
45-49% of students have achieved math proficiency (compared to the 49% ME state average), while 85-89% of students have achieved reading proficiency (compared to the 84% ME state average).
What is the graduation rate of Casco Bay High School?
The graduation rate of Casco Bay High School is 95%, which is higher than the Maine state average of 86%.
How many students attend Casco Bay High School?
379 students attend Casco Bay High School.
What is the racial composition of the student body?
52% of Casco Bay High School students are White, 28% of students are Black, 8% of students are Hispanic, 6% of students are Asian, 5% of students are Two or more races, and 1% of students are American Indian.
What is the student-teacher ratio of Casco Bay High School?
Casco Bay High School has a student ration of 13:1, which is higher than the Maine state average of 11:1.
What grades does Casco Bay High School offer ?
Casco Bay High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Casco Bay High School part of?
Casco Bay High School is part of Portland School District.
In what neighborhood is Casco Bay High School located?
Casco Bay High School is located in the North Deering neighborhood of Portland, ME. There are 3 other public schools located in North Deering.
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