Middlesex Middle School
Darien, CT · Middle School · Grades 6-8
Middlesex Middle School is a middle school in Darien, CT with 1,068 students enrolled and a 63% proficiency rate. Part of Darien School District. NCES data from the U.S. Department of Education.
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About This School
Middlesex Middle School is a middle school located in Darien, Connecticut. The school serves 1,068 students in grades 6-8. The student-to-teacher ratio is 9.6:1.
According to EDFacts assessment data, 63% of students meet grade-level proficiency standards in combined math and reading.
2% of students qualify for free or reduced-price lunch.
Middlesex Middle School is part of the Darien School District in Connecticut.
How This School Compares
Middlesex Middle School has 1,068 students enrolled, making it larger than the average school in Darien School District (668 students). Its 63% proficiency rate is 4 percentage points below the district average of 67%. Compared to the Connecticut state average of 53%, the school performs 9 points higher. With a 9.6:1 student-teacher ratio, it offers smaller class sizes than the national average.
Frequently Asked Questions
Middlesex Middle School has 1,068 students enrolled in grades 6-8. The student-to-teacher ratio is 9.6:1.
According to EDFacts data, 63% of students at Middlesex Middle School meet grade-level proficiency standards in combined math and reading assessments.
Middlesex Middle School is part of the Darien School District in Darien, Connecticut. 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.
The this entity record above pulls directly from NCES Common Core of Data and EDFacts. What follows is the per-entity context — how this entity sits in the broader U.S. K-12 school outcomes and enrollment distribution and which underlying factors drive the headline numbers.
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.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. public schools and districts with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: NCES Common Core of Data, 2026.