DS just finished 4th and he says the teacher told him they are having him skip another year and he will be doing 9th grade math for high school credit next year. I don't think they have a plan for how this is going to work, but they somehow come up with something each year in the fall. I just wish I would be informed of what they are doing. I don't know why schools are always so worried about the social aspect, like kids are not going to be able to handle it. It's just one class. DS has done just fine in that regard even though he is awkward, and the kids were up to 3 years older.