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 381 students in grades 9-12, Casco Bay High School ranks in the top 20% of all schools in Maine for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 90-94% (which is higher than the Maine state average of 82%). 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 14:1 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 14% (majority Black and Hispanic).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 381 students
- Student:Teacher Ratio: 14:1
- Minority Enrollment: 48%
- Graduation Rate: 90-94% (Top 20% in ME)
- Overall Testing Rank: Top 20%
- Math Proficiency: 90-94% (Top 10%)
- 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
Overall Rank
Math Proficiency
Graduation Rate
Diversity
School Overview
Casco Bay High School's student population of 381 students has stayed relatively flat over five school years.
The teacher population of 28 teachers has grown by 7% over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
381 students
Gender %
Total Classroom Teachers
28 teachers
Year Founded
2005
Colors
Black, Teal
School Rankings
Casco Bay High School ranks within the top 20% of all 512 schools in Maine (based off of combined math and reading proficiency testing data).
The diversity score of Casco Bay High School is 0.64, which is more than the diversity score at state average of 0.26. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#83 out of 512 schools
(Top 20%)
(Top 20%)
Math Test Scores (% Proficient)
90-94%
82%
Reading/Language Arts Test Scores (% Proficient)
85-89%
84%
Science Test Scores (% Proficient)
40-44%
37%
Student : Teacher Ratio
14:1
11:1
American Indian
n/a
1%
Asian
6%
1%
Hispanic
9%
3%
Black
28%
5%
White
52%
86%
Hawaiian
n/a
n/a
Two or more races
5%
4%
All Ethnic Groups
Graduation Rate
90-94%
86%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
25%
33%
Eligible for Reduced Lunch
17%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), ME Dept. of Education
School Notes
- School Mascot: Cougar
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Casco Bay High School's ranking?
Casco Bay High School is ranked #83 out of 512 schools, which ranks it among the top 20% 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?
90-94% of students have achieved math proficiency (compared to the 82% 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 90-94%, which is higher than the Maine state average of 86%.
How many students attend Casco Bay High School?
381 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, 9% of students are Hispanic, 6% of students are Asian, and 5% of students are Two or more races.
What is the student:teacher ratio of Casco Bay High School?
Casco Bay High School has a student ration of 14:1, 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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