My dc absolutely amaze me with the math they know, grammar they use and general knowledge.
I can't remember knowing any of this and I was considered bright at primary. End sats results were two 4s and a 5. The schools were aiming for 4s when I was in year 6 but my dd (not a stealth boast) was level 4 in most things and a 5 in English in year 4.
Or maybe the schools are ten times better then what they were.
Maybe all the testing and inspections has made schools be better instead of coasting.