When I was a kid, we moved in the middle of the school year a couple of times. My dad was a welding engineer. It was an adventure, but it was difficult to get established with new friends.
How does your kids' mom feel about the issue? How do the kids feel about it? How old are the kids?
I think that it could be detrimental to the continuity of your kids education. The new school probably isn't at the exact same spot in the curriculum as the old school. Do they use the same books? (That would help the transition). Kids are resiliant, though, and they might do just fine....still, with 7 weeks left of school, I would think it would be better to wait until fall to change schools.,,I guess it depends on how mom feels about the driving.
I hope this helps...others might have different opinions...Becky