Poll: Should it be illegal for a teacher to have sex with an 18-year-old student? So is that really illegal? The answer's a little complicated. In New Jersey, the age of consent is generally 16. But a teacher may be charged with sexual assault on someone over whom he or she had a supervisory capacity, even if the alleged victim is 16 or 17. Continue reading... http://www.nj.com/morris/index.ssf/2015/04/should_it_be_illegal_for_a_teacher_to_have_sex_wit.html