Melinda Chantea Fisher, 29, allegedly punched her supervisor in the face, banged the victim's head into a wall and kicked the victim after the supervisor confronted her about being late for work. Fisher then threw a cup of coffee at her supervisor.
The altercation happened on April 21 at South End Elementary School.
A parent who was dropping off a student along with other staff members intervened, pulling Fisher from the victim.
The victim was taken to a local hospital with face, head and back pain.
According to the principal, some students may have witnessed the fight, but no one was in danger.
Fisher, a district-wide technology assistant in the school system, is due in Bristol Superior Court today.