Is this normal? Is there evidence behind it?
Surely it does a disservice to the more able, as well as the less able.
My DC's school does this. Absolutely no differentiation, ever. Sometimes, there is an optional challenge.
I'm not keen as I think it leads to poorer behaviour (children who aren't set appropriate work are more likely to mess about) and doesn't reach the more able resilience, as they get used to not being challenged.
Any helpful ideas?