i went to a faith based catholic school in London. There was a limit of 20 students per class. If more than 20 enrolled they were in a seperate classroom with a separate teacher. For example my class was Year 2, Classroom A and the the other class was Year 2 Classroom B. They did that for every year.
I can also say we were not taught sex ed in primary school. Only in High school. Tim & Ella really can't bang on about what happens in UK schools. Tim was in school in the 90s, Ella never went to school. Their kids have never been to school so the parents aren't up to date with how things are done. The only friend they seem to have from Hezes football is Muslim, so possibly goes to an Islamic school where learning & education will be much different from a christian school.
The truth is, Tim & Ella are too lazy to get up, do school runs, prepare lunches, get kids washed & dressed. Their too lazy to get a proper job to provide for their kids. They want to do as little as possible to earn money. Their relying on Heze to become a famous millionaire so the other kids can get careers from his name. All in the hope the kids will shower Tim & Ella with money, gifts, a new home etc. Their genuinely fame hungry, dying to be celebrities