Two teachers witnessed Mark MacDicken, who has been an employee of the school for almost 10 years, assaulting the student on Sept. 16, according to the Fairfax County Police Department.
There was no further information given about the incident.
On Sept. 20, law enforcement arrested MacDicken and he was released from police custody on his signature, authorities said.
Police are asking anyone with more information to call them at 703-246-7800.
Click here to follow Daily Voice Alexandria and receive free news updates.