New Jersey ? Authorities say a New Jersey teenager threatened to rape and kill his teacher if she did not give his entire class an “A++” for the last school year.

Authorities say the 14-year-old boy made the threats in an e-mail sent in May. He has been identified only as a student at the Paterson Charter School for Science and Technology.

He is also accused of threatening to rape the teacher’s mother and sister if the grades were not changed within 48 hours.

The boy turned himself in to Passaic County authorities Friday and was charged with making terroristic threats and criminal coercion. He was released to parental custody pending a hearing in family court.