Sixteen-year-old Brenda Carina Soto of Burke was found unresponsive in a bathroom at Lake Braddock Secondary School on Wednesday, April 20, just before 6 p.m.
First responders from Fairfax County Fire & Rescue were performing CPR on her when police officers arrived, a release from the Fairfax County Police Department said.
Soto was pronounced dead after she was taken to Inova Fairfax Hospital.
Major Crimes Division detectives are investigating the incident.
A vigil for Soto is scheduled to take place at the Lake Braddock Secondary School main entrance at 6 p.m. on Sunday, April 24.