Evolution is neither theory nor fact. It is a process that happens constantly around the world. It's not something that is up for debate - we know it happens, because we've seen it multiple times, and even controlled it ourselves. To deny it is to admit ignorance. You might as well claim that gravity doesn't exist either.
The Theory of Evolution (note how it is called the "Theory of Evolution - it is a theory about how evolution works, not whether it exists or not) is a theory, but one that has is constantly being proven correct. It will never become a fact, because that isn't how facts work, but it is about as close to one as we've gotten. This is up for debate, because that's how progress is made. Evolution happens - the only debate is over how it happens.
Evolution is accepted in the same way that the roundness of the Earth is accepted. When people complain that schools are ignoring the debate, what they actually mean is that schools are not pandering to the minority of people who have absolutely no idea what they are talking about. Education exists to teach our children about the world, not about whatever piece of guesswork people choose to cling to next. In places where your position on evolution actually matters, evolution is known to exist; schools do not exist to prepare our children for having largely meaningless conversations on internet forums.