DD is year 6 and her class teacher( and year head) has told them that if they don’t do well in SATs then they’ll be put with the disruptive, badly behaved kids in ‘big’ school. Ie put in lower sets forever
I have told her this is nonsense - that the new school will assess her themselves up til Oct half term then stream sets for certain subjects (which they do - her DB is there ) and the SATs don’t matter.
And they continually assess and move kids around according to ability/ progress through school terms/ years
YABU - yes they matter, and yes secondary school will pay attention to the results
YANBU - they don’t really matter