Can I ask you for some insight please?
Where you have streaming for classes, how is it done? I understand that initially setting is done on CAT and SAT results but do opportunities for movement between sets exist?
In my DC’s school there is only one top set and the others are all mixed ability. AFAIK, all sets are given a test every half term but the top set also take an extension paper at the end of the year. I think although am not sure that the pupils in the mixed ability classes are given this extension paper (on things they have not studied) if they get an unspecified required amount on the basic test. I think this means they might move up if they do well enough in the extension test.
What do your schools do?
What happens if there are more able pupils than you can accommodate in the top set?
Many Thanks