It's almost as if the guidance is written to deliberately sabotage the efforts of making schools safer...
"Children with at least one parent or carer who is a critical worker can go to school or college if required."
Under the guidelines we are entitled to a space for both dc, one has an EHCP and both as dh is a critical worker.
However, I am a SAHP and carer as both dc have SEND, so we decided we would do our best to keep dc at home again and home school (just like we did when we pulled them out of school in early March prior to the first school shut down).
Luckily over the summer we changed both dc to a different high school, who so far have been fabulous, very supportive and providing online education to their usual timetabled school day. Mostly set work on Teams this week but we have already had 'live' PE lessons and both dc have 'live' tutor time every morning. I'm really impressed 😊.
It will be hard, my ds has ASD, dyslexia and ADHD and dd has ADHD, so will need additional input from me, but we want to do our best and minimise risk to our own family (I'm diabetic) and to the wider school and community. I could really do with a break and would prefer my dc to have full time face-to-face education at school, but that is not what is best at the moment in
the current pandemic situation.
There seems to be many people taking advantage and sending their dc in if one parent is a critical worker and the other at home, but I can understand why you would need to if both parents are still working.
Many employers seem to be insisting people come into work or continue to work from home if they can justify in any way calling them critical workers, so, many parents don't have a choice.
I don't know what the answer is, as everyone's idea of how best to protect their family and community differs!
It's not going to protect your child or family if you lose your job/home/mental
health, but if everyone just blindly follows the government 'guidance' to the letter then they are 'entitled' to a place at school for their child/children, this situation will last for longer and schools will still be a massive vector 
.
I hope the government aren't deliberately sabotaging this so it 'proves' schools being open/closed makes no difference to rates of infection. After all, if 75% of dc are in some schools it won't make that much difference to the numbers. School classrooms have been overcrowded for years, and even at 75% capacity can't socially distance sufficiently.
I think the government need to clarify in the guidance that a school place can only be made available currently when there is no parent available to care for/supervise their child at home and force employers to allow people to work at home if at all possible. That would be really hard for the parents wfh, but would hopefully shorten the time needed for schools to be closed.