School districts really aren't doing any more training or working on remote learning. Teachers are not required to work in the Summer and therefore most will won't do anything to prepare. My wife works with multiple school districts here in SoCal. We even had one district who had negotiated with the teachers union and they did not legally have to do any online instruction at all. (Huntington Beach). So, many teachers simply did nothing, or very little. The school board there has been taking heat over it for the last couple of months.