Patrick Robinson, a 26-year-old teacher at Hedrick Middle School in Lewisille, Texas, is the subject of a local police investigation after three students reported the physical education teacher lifted them off the floor by their hair, WFAA-TV reports.
Parents of the students who were allegedly abused filed a compliant, and Robinson was placed on paid leave pending the results of the investigation.
Police Capt. Kevin Deaver told NBC Dallas-Forth Worth that, while Robinson has not been arrested, he could face three felony counts of injury to a child if the investigation yields sufficient evidence.
The Lewisville Independent School District confirmed that Robinson, who has worked at the school for two years, has since resigned for the rest of the current school year, according to the station.
This isn't the first school gym-related incident to cause controversy.
Last month, Marco Inskip, a 40-year-old substitute teacher in Egg Harbor City, N.J., was suspended after allegedly telling a 7-year-old girl her clothes were "too sexy" for gym class.
The girl's father, Henry Wilson, told the Press of Atlantic City that, while he appreciates the suspension, he wants the punishment to be more extensive. The Egg Harbor City school board plans to visit the case in May.