There are various articles stating pretty much all the new elementary schools in 4s is full so if you aren’t in the MR district, you won’t be able to go. Even people IN the district and paying aren’t sure to go to their school next door I read just in an article a few weeks back and the guy was being sent to Adobe Bluffs or something.
There is a new K-8 school coming in 4s near del sur where all the new building is which should help a bit I’d guess since most of the full classes seems to be in Kindergarten.