One 14-year-old student at the Bloomfield Middle School is charged with aggravated assault for allegedly striking another with a clarinet case.
It happened around 3:30 p.m. Friday as the two girls were on a bus, waiting to leave school, according to a district news release.
Spokeswoman Stephanie Hartley says the victim was struck in the head and was bleeding over her ear.
She says the two students were arguing over a personal matter, and no other students were involved.
The victim was treated and released at the Medical Center of Central Georgia.
The attacker has been suspended from school, the release says.