All schools can say and do say is "we will try our best".
Risk assessments are in place and guide arrangements. This is going to be more difficult practically in the winter, with less use of outdoor and less of the much needed ventilation. Someone suggested marquees, some of the schools I work with have done this. It maybe ok in September, but not appropriate throughout the winter.
Children will be back to more contact with other children and more adults, PPA teachers, sports coaches moving between schools, supply.
Parents will be inconvenienced around staggered starts having to transport or walk/ride with their own children (not as pleasant in the winter) and be available for children to be sent home if ill. Before and after school care can go ahead, but may be limited, as with holiday care. Staff training days will still require closure as staff legally must be trained in at least the latest 'Keeping Children Safe in Education' policies.
All we can do is try it. If the virus rates increase because the arrangements the government have put in place are not sufficient then schools/classes/year groups will close again.
Difficult for parents concerned for their own child's safety, when attendance will be mandatory (unless HE).