Enough reason, in who's eyes? The kid's? I'm sure. My own? Yes, of course. A court's? I'm not entirely certain, but they might have something to say about it. At any rate, the only way a court will grant an emancipation to a minor before they reach the age of consent is if they are fully able to support themselves on their own (utterly and completely, including insurance, living expenses, schooling, the whole deal), and based on that child's own level of maturity. The odds of getting emancipated are very, very slim, so know that much. Out of all the requests for emancipation filed every year, very few of them are granted.
If that doesn't answer your question, then I'm not quite sure what you're asking here. Is a lack of schooling reason enough for what, exactly? For the child in question to be magically exempt from age of consent laws, no. If you're in this situation and you have genuine concerns, my advice to you is to contact an agency that deals with these types of cases (a child protection agency, perhaps, but probably not) and explain to them the situation regarding you not being able to attend school, but to be honest, I don't think there's much you can do.