Trailside Middle School, 20325 Claiborne Parkway: grades 6-8, 1,144 students in fall 2025, rated Distinguished by the state. Office: 571-252-2280.
Last checked Oct. 19, 2026. Sources: Trailside Middle School, Loudoun County Public Schools, the Virginia Department of Education’s School Quality Profile, the federal NCES school directory and LCPS’s 2026-27 elementary, middle and high school zone layers.
Trailside Middle School, at 20325 Claiborne Parkway, serves grades 6 to 8 for Ashburn Farm and the rest of its zone, and feeds Stone Bridge High School. It is one of five Loudoun County Public Schools (LCPS) middle schools with an Ashburn address.
Who to call
- Front office: 571-252-2280, 8 a.m. to 4:15 p.m.
- Attendance: Absences, tardies and early dismissals through ParentVUE or TMSattendance@lcps.org
- Enrolling a new student: LCPS Registration Services, 571-252-2490, and online pre-registration
- Which school serves an address: LCPS Planning and GIS Services, 571-252-1050, or the LABEL address lookup
- Buses: LCPS Transportation, 571-252-1700, 6:30 a.m. to 5 p.m. (transportation page)
- LCPS central office: 21000 Education Court, Ashburn, 571-252-1000
| Address | 20325 Claiborne Parkway, Ashburn, VA 20147 |
| Grades | 6 to 8 |
| Main phone | 571-252-2280 |
| Website | lcps.org/o/tms |
| School division | Loudoun County Public Schools |
Principal
Principal Bridget Beichler, according to the school’s website.
Enrollment and teachers
- State count: 1,144 students in fall 2025, compared with 1,131 in 2024 and 1,160 in 2023, in the School Quality Profile.
- Federal count: 1,159 students in the 2023-24 school year, with 81 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: 95.12, rated Distinguished, in the division summary
Standards of Learning pass rates (grades 6 to 8, share of tested students who passed), from the School Quality Profile:
| Subject | 2023-24 | 2024-25 | 2025-26 |
|---|---|---|---|
| English reading | 85% | 91% | 89% |
| Math | 82% | 89% | 86% |
| Science | 77% | 88% | 90% |
The full profile also reports attendance, teacher data and spending.
Attendance zone
Every address in the Trailside Middle zone goes on to Stone Bridge High. The elementary zones inside it, by share of the middle school zone’s 7,456 county address points: Belmont Station Elementary (35%), Cedar Lane Elementary (33%), Sanders Corner Elementary (18%) and Newton-Lee Elementary (14%). Newton-Lee is split, so only part of that zone comes here.
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 posts its bell schedules on its website.
More on Ashburn schools
- The school’s own page: lcps.org/o/tms
- The state’s School Quality Profile for Trailside Middle
- Every public school in Ashburn, with zones and state ratings
- Our Ashburn schools guide for the calendar, registration and the School Board
Frequently asked questions
What grades does Trailside Middle School serve?
Grades 6 through 8. The state counted 1,144 students in fall 2025.
How is Trailside Middle School rated by the state?
It is fully accredited for 2025-26. In Virginia’s School Performance and Support Framework it scored 95.12 and is rated Distinguished.
Which high school does Trailside Middle School feed into?
All of it goes to Stone Bridge High. Elementary zones in the middle school zone: Belmont Station, Cedar Lane, Sanders Corner and Newton-Lee.
Who is the principal of Trailside Middle School?
Bridget Beichler, according to the school’s website.
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