Police say a Virginia mother hit an assistant principal at her child's elementary school in the head, knocking her unconscious briefly.

Portsmouth police said in a news release that the confrontation occurred Tuesday afternoon, when 43-year-old Tracy Lawrence visited Lakeview Elementary School to speak to the assistant principal about an issue involving her child.

Police say witnesses told the investigators that Lawrence was unhappy with the assistant principal's final decision on the matter. Police say Lawrence hit the assistant principal in the head, causing her to lose consciousness. Police were called, but Lawrence left before an officer arrived.

Police say they don't believe any children witnessed the altercation.

Lawrence was arrested at her home and charged with assault and battery and disorderly conduct.