Well if you don't have to register as a sex offender that's a plus. This will show up on any criminal background check. No you likely can't get it expunged. It could very well affect your admission to college or employment. That's up to the admissions office and the employer if they want you in their college or as their employee.
First you have to get through college before you can even think about being a teacher, don't you? These days I'm not sure so many schools would hire teachers with statutory rape convictions but you never know.

