"Too localized" is a term I encountered on mathoverflow, where it is grounds for closing a question that is a routine exercise for undergraduates, as opposed to a research question. But here on stackexchange, routine exercises for undergraduates are probably more than 50% of all questions and are appropriate. So what does "too localized" mean here?
According to the "close" box, "too localized" means:
This question is unlikely to ever help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet.