Private School and SATs

[Charlie2000]

Do children at private schools have to sit SATs?

no they don't but may do cats and/pips to assess potential

No, but many private schools choose to do them. Often private school kids have to do entrance exams to senior schools so they don't escape.

1 out of 3 of my kids' schools did them before deciding it was a colossal waste of time as the material was covered in yrs 4 and 5 so it was just an excersize in revision and every child got 5s. DD's school does previous year's paper in yr 5 just to benchmark for kids coming in at 11+. All got 5s in her year.

No, they don't have to but some do - having excellent SATs in the league tables can be a good marketing tool.
DDs primary didn't bother with KS1 (total waste of time) but did do KS2 - got excellent results with very little additional effort. They also did CATs.

For assessment or entrance from state schools aged 7, it is advised that they are at SAT level 3, so they are clearly aware of them.

DD's school does them and the results are on the website.

There doesn't seem to be huge emphasis on them in school (DD only yr 2 though)

More emphasis seems to be on prep for 11+/selective entrance tests.

PIPS rings a bell as does NFER testing.