I'm not against your decision as a parent to make whatever choice you deem the right one for your child's safety OP, it does look very bad for Friday, I agree...but please, could people stop with the narrative of 'it's the last day/week of term so they won't be doing much'?
This really isn't true anymore in the very vast majority of schools (and hasn't been for years now!)
I actually can't remember when we were allowed to relax our timetable even for one afternoon, let alone a whole day, or god forbid 'the last week of term', as some people still seem to think happens in schools. I'm in primary...maybe it's different in secondary schools, I don't know, but I've worked in 5 different schools since coming back from working overseas in 2015, and I can promise you, in not ONE of these schools, or any others that I know, is this 'a thing'. The exception might be a whole school event at the end of the summer term, or a class party to mark the end of summer/Christmas (not even that in my current school though!)...but literally, that's it!
It's quite sad in some ways, as our children no longer get a single minute to breathe in the daytime...it's completely 'on timetable' without a second wasted! They are shattered...and so are we 😢
Caveat: I do of course know that 'some' schools (a minority) will have lovely heads/SLT and they will STILL be allowed an afternoon occasionally to do 'nice things' with their teacher...good for them! Sadly, these schools are a quickly dying breed...if your children attend one, don't move them! If you happen to work in one...don't leave 😅