So you think some schools should have holidays at one time, some at another?
Actually no. I think that in general, schooling is not effective, and teachers are unable to do their job in this current, unprecedented situation. I think it would be a good idea if the long holiday was moved to now, with all schools (state I guess, as private are self managing) off for the next 4-5 weeks, with the term dates shifted accordingly. Obviously July to Christmas is a long time, so it would need to have 2 half term breaks, preferably at least one, if not both, of 2 weeks each.
I can't really see why it doesn't make sense to have teachers and children off at a time when it is hard for them to work/learn, and in school at a time when it is easier for them to work/learn.
Yes, teachers might have to cancel their summer holiday plans, but a) they are quite likely to have to do that anyway, and b) surely that's a very small price to pay for job security, full pay throughout and being able to stay safe and help save lives.