HOUSTON --A former teacher caught on camera beating a student has pleaded guilty to injury of a child. Sheri Lynn Davis was working at Jamie's House Charter School when cell phone video was taken of her beating a 13-year-old male student. Last week, Davis was sentenced to five years probation, deferred adjudication and a $130 fine. Her lawyer claims she beat the student to protect another child in the classroom. Davis was fired from the school.