What happened
During a takeoff attempt, the student pilot applied the left brake while simultaneously increasing power. This caused the Cessna (type not specified in source) to veer toward the left side of the runway. In response to instructions from the Certified Flight Instructor (CFI) to maintain the centerline, the student released the brake and applied full power.
The aircraft subsequently exited the runway, bounced over a ditch, and entered the ramp area. Although the CFI reduced engine power to idle and applied the brakes, the aircraft could not be stopped before colliding with parked aircraft. The instructor reported that because the student had both feet positioned on the rudder pedals, she was unable to maneuver the aircraft to avoid the obstacles. The excursion resulted in the aircraft contacting two parked airplanes; one of these collisions pushed a third airplane into another.
There were no injuries reported in the incident.