The cutting at Roanoke Rapids High School Tuesday occurred inside a classroom and not outside, Chief Jeff Hinton said this morning.
Hinton said the student charged, Ryshea Shakira Alston, 16, brought the bottle she allegedly used to cut another student in her purse.
Another student and a faculty member of the high school were injured.
Ryshea Shakira Alston, of the 900 block of Henry Street, was charged with two counts of aggravated assault with a deadly weapon.
Alston also injured herself in the fight which occurred shortly before 9:30 a.m.
A motive is not known and Alston was jailed on $3,000 bond.
Police declined to name the victims, who did not have life threatening injuries.