EMAS confirmed it sent a number of resources including paramedics in ambulance cars, crewed ambulances and its Hazardous Area Response Team.
A responder from the air ambulance was also in attendance.
A county council spokesman said: “The area where the children were playing remains cordoned off, and following a professional inspection this morning by our school’s ground maintenance team, a small number of trees will be removed.
“This morning’s school assembly reinforced the message of safe play and the dangers of eating berries or seeds from trees and shrubs.”
