The mother said her daughter Khimberly Zavaleta was simply trying to protect her older sister from a group of bullies.
Although details are limited, the district said the high school student was expelled and faces a felony charge for assaulting the employee, who is undergoing medical treatment.
Spring ISD didn't immediately give an update on the person's condition, but it did confirm that multiple students were involved in the on-campus melee on Thursday.
The injured student's mother told Eyewitness News that her daughter was "stabbed" seven times before staff members intervened in the minute-long fight.
Two Humble ISD parents are accused of pulling a gun in the middle of a big high school campus fight. The adults talk only to 13 about why.
An Afghan student was brutally attacked nearly two miles from Wisdom High School. HISD cops believe this was a hate crime after an ongoing "conflict" with Hispanic classmates.