I don't have any advice since we aren't quite there yet but my 9 year old (fourth grade) is currently doing a combination of pre-algebra and algebra with 3 5th graders. I'm not sure what will happen next year since the 5th graders will have graduated and gone onto middle school. I think the key is to do it in a school that is flexible. If it doesn't work out will they let the child re-take it? Or back up to a lower level temporarily? Can they be flexible with the assignments? Or are they going to treat little kids like they are 15 with the executive functioning of 15 year olds?
