Miramar Ranch Elementary School instructor Lana O'Shea was walking with her pupils down a stairway on the grounds of the Red Cedar Drive campus when the large eucalyptus branch fell on her shortly after 2 p.m., according to San Diego Unified School District officials.
Medics took O'Shea to Sharp Memorial Hospital, where she was admitted for treatment of a traumatic head injury, fire Capt. Joe Amador said. No one else was hurt.
The victim, who was conscious and responsive following the mishap, was expected to fully recover, SDUSD spokeswoman Linda Zintz said.
School officials planned to send in an arborist to inspect all the trees at the school and remove any other branches that appear at risk of spontaneously snapping off, according Zintz.