Brandon Reynolds, 36, who was enraged at his daughter's attitude towards homework, decided to discipline her by spanking her with a shoe. The incident reportedly led to the 5-year-old's death.
Sunset Middle School, in Brentwood, apologized for its "gross error in judgement" over a social studies assignment.
Police have arrested four family members over the death.
"What truly upset me is the fact that they're talking about revenge sex," Omar Austin told Newsweek.