Otherwise consensual sexual relations between an adult and a minor of age 16 (or, two minors) is charged as PC 261.5 in CA. If more than three years apart, it can be a felony. If less than three years, it is a misdemeanor. Neither are registerable offenses here. In this instance, the OP appears to have been charged and convicted of PC 261.5 as a misdemeanor which is not an automatic bar to teacher credentialing or employment in education ... oddly enough. But, then, not even DV or dope are bars to employment, either.