Despite the legal definition of an adult as someone “18 and older,” state courts have held that sexual relationships between students and teachers are against the law.

Is it illegal for student to date teacher?

The not-so-desirable consequences In many countries, it is illegal for a teacher to date or have any sexual contact with a student, no matter their age. However, in the majority of countries, it is not illegal once the student reaches university level so long as they are of consenting age in that country.