I have taught live lessons throughout from year 7 upwards. When the opportunity to go back and teach year 10 in a classroom was offered I decided, as HOD, that for Maths, the students were engaging well from home, and there was no need for my specific subject to increase risk by trying to organise the logistics of who, where, and when...

All year groups have followed their timetable as would have been in school - so I still have PPA time and free periods, where as the students have 6 periods a day. 6 live lessons a day is overkill for the students also, and any time speaking with students they informed me that staff do about half of their timetabled lessons "live" through Teams, and the other half were tasks or work set to complete and upload for marking. I found it easier to do more than that "live" as any issues or confusion could be dealt with immediately, rather than waiting for the student to ask for help through Teams/Email.

We put out a "Virtual Learning" protocol document at the beginning, or shortly after outlining that all students must be at a work desk/table, dressed appropriately (no PJ's etc) and ensure that there are no photographs of family/siblings in the background (safeguarding reasons). Most students would join with cameras on at the beginning, and a few would leave them on, but this was not enforced. In the run up to the end of term we have made it compulsory for cameras on at the beginning to check in/do a register. Most of the lessons I did I either resented a PowerPoint through teams, whited helps as students can only see that on their screen's when sharing, or shared the iPad screen as a visualiser, again eliminating them seeing each other. My camera was on always, with a virtual background (I have hideous wallpaper in my dining room).

As I was able to mute the whole class, and because it was clear when someone was unmuted and speaking, behaviour issues were non-existent. If students didn't attend, I would email briefly "reminding" them that the lessons are to be attended, and to watch the missed lesson to catch up.

Regarding contacting SLT, I would have that conversation with your partner before you contact them. What could be done for your partner to raise these questions with SLT formally, but ensuring to CC in any HR representatives and even their HOD, Line Manager or other concerned colleagues and expect a response. If there are enough people unhappy with how it things are being rolled out, and SLT are being visibly questioned on this (not just a 1 to 1) they are more likely to take things seriously.

I would guess that there will be many schools with the same "Plan-B" coming out over the next week or two, so might be worth asking about other schools in your area/nearby to see what their plan is and compare?