Ok so putting aside the argument that Northern kids have clearly been completely ignored here, despite suffering repeated self-isolations for months.
I don't disagree with the principle but who in their right minds is going to agree to their kid being tested when there is a risk of being self isolated for christmas, not just for their own kid but the whole class.
Surely just closing the schools for the last week of term (except perhaps exam children) would be more effective if they really think it is spreading in schools.
If there are any parents in the affected schools/areas I'd really like to hear what you think and if you think it's reasomable.