Casco Bay High School
Portland, ME · High School · Grades 9-12
Casco Bay High School is a high school in Portland, ME with 382 students enrolled and a 61% proficiency rate. Part of Portland Public Schools. NCES data from the U.S. Department of Education.
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About This School
Casco Bay High School is a high school located in Portland, Maine. The school serves 382 students in grades 9-12. The student-to-teacher ratio is 13.2:1.
According to EDFacts assessment data, 61% of students meet grade-level proficiency standards in combined math and reading. The school reports a 79% graduation rate.
34% of students qualify for free or reduced-price lunch.
Casco Bay High School is part of the Portland Public Schools in Maine.
How This School Compares
Casco Bay High School has 382 students enrolled, making it smaller than the average school in Portland Public Schools (405 students). Its 61% proficiency rate is 9 percentage points above the district average of 53%. Compared to the Maine state average of 54%, the school performs 7 points higher. With a 13.2:1 student-teacher ratio, it offers smaller class sizes than the national average.
Frequently Asked Questions
Casco Bay High School has 382 students enrolled in grades 9-12. The student-to-teacher ratio is 13.2:1.
According to EDFacts data, 61% of students at Casco Bay High School meet grade-level proficiency standards in combined math and reading assessments.
Casco Bay High School has a 79% graduation rate, measuring the percentage of students who graduate within four years.
Casco Bay High School is part of the Portland Public Schools in Portland, Maine. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
this entity is one of the data points covered by this site’s U.S. K-12 school outcomes and enrollment dataset. The detail above comes directly from NCES Common Core of Data and EDFacts; the context that follows situates the headline numbers against the broader distribution across U.S. public schools and districts.
The methodology behind every numeric value on this page is publicly documented on the NCES Common Core of Data and EDFacts portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. public schools and districts. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: NCES Common Core of Data, 2026.