Mercer Middle
Aldie, VA · Middle School · Grades 6-8
Mercer Middle is a middle school in Aldie, VA with 1,379 students enrolled and a 69% proficiency rate. Part of Loudoun County Public Schools. NCES data from the U.S. Department of Education.
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About This School
Mercer Middle is a middle school located in Aldie, Virginia. The school serves 1,379 students in grades 6-8. The student-to-teacher ratio is 14.5:1.
According to EDFacts assessment data, 69% of students meet grade-level proficiency standards in combined math and reading.
18% of students qualify for free or reduced-price lunch.
Mercer Middle is part of the Loudoun County Public Schools in Virginia.
How This School Compares
Mercer Middle has 1,379 students enrolled, making it larger than the average school in Loudoun County Public Schools (851 students). Its 69% proficiency rate is 11 percentage points above the district average of 58%. Compared to the Virginia state average of 46%, the school performs 24 points higher. With a 14.5:1 student-teacher ratio, it offers smaller class sizes than the national average.
Other Schools in Loudoun County Public Schools
Frequently Asked Questions
Mercer Middle has 1,379 students enrolled in grades 6-8. The student-to-teacher ratio is 14.5:1.
According to EDFacts data, 69% of students at Mercer Middle meet grade-level proficiency standards in combined math and reading assessments.
Mercer Middle is part of the Loudoun County Public Schools in Aldie, Virginia. 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.
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.