Dorothy Hamm Middle School, 4100 Vacation Lane: grades 6-8, 1,009 students on Sept. 30, 2026, framework score 93.6, Distinguished. Office: 703-228-2910.

Last checked Oct. 19, 2026. Sources: Dorothy Hamm Middle School, Arlington Public Schools, the Virginia Department of Education’s School Quality Profile and the federal NCES school directory.

Dorothy Hamm Middle School is an Arlington Public Schools (APS) neighborhood middle school in North Arlington. It sits at 4100 Vacation Lane and serves grades 6 to 8. Its building is the former Stratford Junior High School, which in 1959 became the first Arlington school to integrate and is on the National Register of Historic Places; see our history and landmarks guide.

Who to call

  • Main office: 703-228-2910 (fax 703-558-0317)
  • New to APS (registration): APS Welcome Center, 703-228-8000, option 1; 2110 Washington Blvd., first floor
  • Buses and general questions: APS main line, 703-228-8000
  • Which school serves an address: School and Community Relations, 703-228-6005
Address 4100 Vacation Lane, Arlington, VA 22207
Grades 6 to 8
School day 7:50 a.m. to 2:35 p.m. (early release 12:05 p.m.)
Website dorothyhamm.apsva.us
Division Arlington Public Schools

Principal

Principal Octavia Knigge, according to the school’s website.

Enrollment and teachers

  • APS count: 1,009 students on Sept. 30, 2026: 341 sixth graders, 322 in seventh grade and 346 in eighth, in APS’s official membership summary (PDF).
  • State count: 1,015 students in fall 2025, up from 991 in 2024 and 933 in 2023, in the School Quality Profile.
  • Federal count: 932 students in the 2023-24 school year, with 69 full-time-equivalent teachers, according to the NCES directory. That works out to about 14 students per teacher.

State report card

Virginia’s School Performance and Support Framework scores each school on mastery on state tests, growth, readiness and graduation, according to APS’s framework page. Schools scoring 90 or more are Distinguished, 80 to 89 Meets Expectations, 65 to 79 Approaching Expectations and below 65 Needs Intensive Support.

  • 2026-27 framework score: 93.6, rated Distinguished, with no federal identification, in the division summary (PDF).
  • Accreditation: Fully Accredited

Standards of Learning pass rates (share of tested students who passed), from the School Quality Profile:

Subject 2023-24 2024-25 2025-26
English reading 86% 88% 86%
Math 85% 85% 86%
Science 83% 81% 82%

Attendance zone

APS assigns neighborhood schools by home address. Check an address in the APS boundary locator or on the 2026-27 middle school boundary map (PDF).

Feeder elementary schools: on APS’s boundary maps, all of the Innovation and Taylor zones lie inside the Dorothy Hamm zone, along with most of the Arlington Science Focus zone and about half of the Glebe zone.

High school: most of the Dorothy Hamm zone lies in the Yorktown High School zone and the rest in the Washington-Liberty zone.

Calendar and bell times

From the APS 2026-27 calendar:

  • Wednesday, Oct. 28: early release, all schools
  • Monday, Nov. 2: end of first quarter
  • Tuesday, Nov. 3: no school for students (Election Day)
  • Wednesday, Nov. 11: Veterans Day, no school
  • Nov. 25-27: Thanksgiving break
  • Dec. 23 to Jan. 1: winter break
  • Thursday, March 18, 2027: early release; Friday, March 19: no school (parent-teacher conferences)
  • March 22-26, 2027: spring break
  • Thursday, June 17, 2027: last day of school, early release

The school day runs 7:50 a.m. to 2:35 p.m., with early release at 12:05 p.m., according to APS.

More on Arlington schools

Frequently asked questions

What grades does Dorothy Hamm Middle School serve?

Grades 6 through 8. APS counted 1,009 students there on Sept. 30, 2026.

How is Dorothy Hamm Middle School rated by the state?

It is fully accredited. In Virginia’s 2026-27 School Performance and Support Framework it scored 93.6 and is rated Distinguished, with no federal identification.

Which high school does Dorothy Hamm Middle School feed into?

Most of its zone lies in the Yorktown High School zone and the rest in the Washington-Liberty zone, on APS’s boundary maps. Check an address in the APS boundary locator.

What time does Dorothy Hamm Middle School start?

7:50 a.m. to 2:35 p.m., with early release at 12:05 p.m., according to Arlington Public Schools.