A friend's son was encouraged to leave school at end of year 10 and instead enroll at a local college to do just maths/english GCSEs and a construction course. He agreed to it happily enough, but now it's not working out, and he wants to go back to school. Are the school obliged to accept him? If they have a spare place I'm guessing the answer is yes, but they're generally an oversubscribed school so his place may have been filled.