Part of the issue with lockdown education in schools with a lot of kids in poverty is that a huge number of kids couldn’t access online teaching, through lack of computers and internet.
We also experienced issues across all income levels of families who dropped off the map (some went abroad to be with family during lockdown, others just never answered the phone), some families were dealing with bereavement, others became angry with any attempt to check up on why work wasn’t being done because they felt strongly that education wasn’t going to continue until schools reopened...
We were being told conflicting things about how much emphasis we should put on the work we did set: if only some of the kids were able to do it, we couldn’t cover any important new material.
On top of that, Lambeth, for very good child protection reasons that nevertheless didn’t seem to apply anywhere else, banned zoom/meets/teams teaching completely.
And so I spent the summer term working long stressful hours without being able to keep on top of each student’s progress anywhere near as well as normal.
I don’t know what happened to @Edie’s son’s maths teacher. It sounds bad, but I don’t know if she was trying to teach while having sole care of two or three preschool kids, or if she or one of her kids was dealing with MH issues or domestic assault or bereavement or financial troubles and housing insecurity- or any one of the number of things we know made it so that a stack of our students and their parents weren’t able to do their best over lockdown. Some people had dreadful lockdowns, and some of those will have been teachers.
It also sounds like the school isn’t being managed very well. Targets are generated in year six, and that happens nationally. Teachers hate these targets, but schools often stop teachers being able to edit them because although they’re meaningless they’re the metric the school is judged on. If teachers can edit them, they might edit them downward which would stop the school hitting its progress goal over all - but someone should have spotted that your son’s Ict target was now meaningless, and changed it to a 9. They haven’t, and that’s a management failure.