Rock Ridge High, 43460 Loudoun Reserve Drive: grades 9-12, plus a pre-K class, 1,624 students in fall 2025, rated Distinguished. Office: 703-996-2100.

Last checked Oct. 19, 2026. Sources: Rock Ridge High School, Loudoun County Public Schools, the Virginia Department of Education’s School Quality Profile, the federal NCES school directory, LCPS’s 2026-27 elementary, middle and high school zone layers and the VHSL alignment.

Rock Ridge High School, at 43460 Loudoun Reserve Drive, serves grades 9 to 12 for the Stone Hill Middle zone and shares a campus with Rosa Lee Carter Elementary School. It is one of five Loudoun County Public Schools (LCPS) high schools with an Ashburn address. The state also counts a small pre-K class at the school.

Who to call
Address 43460 Loudoun Reserve Drive, Ashburn, VA 20148
Grades 9 to 12, plus a pre-K class
Main phone 703-996-2100
School day 9:30 a.m. to 4:18 p.m., with doors open at 8:30 a.m.
Website lcps.org/o/rrh
School division Loudoun County Public Schools

Principal

Principal John Duellman, according to the school’s website.

Enrollment and teachers

  • State count: 1,624 students in fall 2025, compared with 1,606 in 2024 and 1,537 in 2023, in the School Quality Profile. The fall 2025 total includes 17 children in pre-K.
  • Federal count: 1,535 students in the 2023-24 school year, with 111 full-time-equivalent teachers, according to the NCES directory. That works out to about 14 students per teacher.

State report card

Virginia rates each school two ways on its School Quality Profile. Accreditation shows whether the state has approved the evidence the Standards of Accreditation require. The School Performance and Support Framework gives each school a score and one of four performance levels: Distinguished, Meets Expectations, Approaching Expectations or Needs Intensive Support, as listed in the LCPS division summary.

  • Accreditation, 2025-26: Fully Accredited
  • Framework score: 96.52, rated Distinguished, in the division summary
  • On-time graduation: 98%. Of 409 students in the 2025-26 cohort, 401 graduated on time: 319 with an advanced studies diploma, 77 with a standard diploma and five with other diplomas. The completion rate was 99%, and five students dropped out.

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

Subject 2023-24 2024-25 2025-26
English reading 93% 94% 96%
Math 82% 87% 89%
Science 81% 88% 84%

The full profile also reports attendance, teacher data and spending.

Attendance zone

The Rock Ridge High zone and the Stone Hill Middle zone are the same for 2026-27: every address zoned for Stone Hill Middle goes on to Rock Ridge High. The elementary zones inside it, by share of its 8,792 county address points: Moorefield Station Elementary (32%), Rosa Lee Carter Elementary (32%), Elaine E. Thompson Elementary (14%), Creighton’s Corner Elementary (10%), Discovery Elementary (8%) and Legacy Elementary (4%). Of those address points, 6,705 (76%) carry an Ashburn ZIP code, 20147 or 20148.

Check one address in the LCPS LABEL lookup or on the division’s 2026-27 zone maps, or call Planning and GIS Services at 571-252-1050. Our neighborhoods guide lists the zoned schools for each Ashburn community.

How we checked: we matched Loudoun County’s 140,707 address points against LCPS’s 2026-27 elementary, middle and high school zone layers. LCPS does not publish a feeder list, so the feeder lines and shares are our count; the zone lines are the division’s own.

Calendar and bell times

From the 2026-27 LCPS calendar the School Board adopted:

  • Thursday and Friday, Oct. 29-30: no school for students
  • Monday and Tuesday, Nov. 2-3: no school (Election Day is Nov. 3)
  • Monday, Nov. 9: holiday
  • Wednesday to Friday, Nov. 25-27: Thanksgiving break
  • Dec. 21 to Jan. 1: winter break; classes resume Monday, Jan. 4
  • March 22-26: spring break
  • Friday, June 11, 2027: last day of school

The school day runs 9:30 a.m. to 4:18 p.m., with doors open at 8:30 a.m., according to the school’s website (bell schedules).

Sports and activities

Rock Ridge High plays in Class 4, Region C, Dulles District for 2026-27, according to the VHSL alignment. The district’s other schools are Dominion, Loudoun Valley and Tuscarora. Its teams are the Phoenix.

Teams listed on the school’s athletics resource page: boys and girls cross country, golf, field hockey, competition cheer, boys and girls volleyball, football, girls flag football, boys and girls basketball, gymnastics, boys and girls wrestling, boys and girls swimming, indoor track, soccer, softball, baseball, boys and girls lacrosse, boys and girls tennis, outdoor track and crew.

Follow the high school teams on our Friday night football page and the high school scoreboard.

More on Ashburn schools

Frequently asked questions

What grades does Rock Ridge High School serve?

Grades 9 through 12. The state counted 1,624 students in fall 2025, including 17 in a pre-K class.

How is Rock Ridge High School rated by the state?

It is fully accredited for 2025-26. In Virginia’s School Performance and Support Framework it scored 96.52 and is rated Distinguished.

Which middle school feeds Rock Ridge High School?

Stone Hill Middle. Every address in its zone goes on to Rock Ridge High.

What time does Rock Ridge High School start?

Classes start at 9:30 a.m.; the school day runs 9:30 a.m. to 4:18 p.m., with doors open at 8:30 a.m., according to the school’s website.

Who is the principal of Rock Ridge High School?

John Duellman, according to the school’s website.