Secondary HLTA here, been back for three weeks.
Huge High School - about 1700 students, 200 staff.
Four teachers off for a week, waiting to book tests and then waiting for results - all negative.
Lots of staff/students with streaming colds, despite more cleaning, spacing, hand gel, masks in corridors, bubble zones, staggered starts/breaks/lunch times/end of day leaving. Despite all this, we have the usual uptake of colds typical at the start of Autumn term.
I am in no doubt that when (not if) when we get a positive case, it will spread despite the 'safety' measures.
In March, our school closed a couple of days earlier than lock down because of staff shortages - I, as HLTA, am used as emergency teacher cover, and was asked to cover a combined Maths class (not my faculty) of 60 kids, due to the Maths department being depleted. In the end we simply couldn't get supply in, so had to close.
In an average week, I mix with/teach over 150 different students, across KS3 and 4. I teach in classrooms with windows that have been sealed.
I've lost count of the amount of year 7s (in particular) who drop wet snot ridden paper masks in corridors, of older students who think it's fun to deliberately run through younger students waiting zones, and who constantly flout the guidelines. Our behaviour management leaves a lot to be desired!
I think schools will close at half term for an extended period, 2 - 3 weeks which will be when Boris does a 'circuit break' national lockdown. I then think that we will return to blended learning, with KS3 in school and KS4 at home, or the other way around.
Staff shortages will dictate this - as they did in March - Boris didn't want to close schools when he did, but his hand was forced by staff absences across education.
When, in April/May Boris said that the five criteria needed to start to ease lockdown (and re-open schools) included adequate testing, he obviously lied. Because we don't have adequate testing, or anything close to it, but we have opened schools. Testing (or lack of it) and poor turnaround of results (often inaccurate) will result in staff being off school for much longer than they need to be. This will obviously lead to shortages which will result in school closures.
We teach our students that it's fine to make mistakes, because we learn from them. This is something that Boris obviously missed during his time at school: he dithered about locking down in March, and he's dithering again now.
I hope you're ok OP, I totally understand how you and other teaching staff feel. It's a shambles.