Hi Busy
Genuinely - KS1 SATs/ Phonics test are a screening to let the school/ teachers/ parents understand how their child is performing against national standards at that point.
There really is no point trying to prepare your child.
My DD1 didn't have the phonics test (came in after DD1/ DD2) - but scored NC L1 (below expected standard) on all KS1 SATs.
Yes, not very good - but frankly very liberating result. We had been increasingly expressing our concerns to the school about DD1s slow progress in reading/ maths - the fact that she seemed to be way behind her peers from nursery school - the fact that she couldn't even take 1 from 10. We'd been fobbed off with:
Children develop at their own speeds.
Wait until Y1/ Y2 - things will really take off from then.
And the ultimate:
from the HT no less: What you need to understand, Mrs. PSBD, is that your DD1 just isn't that bright.
We gave up on the school that day and started to do more at home, completely reorganising my working life around the school day and making time for me to support DD1's learning.
I suspect your DC will do just fine. But if she doesn't - treat it as a warning sign that you need to do more at home and that the school should be doing more. I certainly didn't appreciate that intervention was necessary for DD1 after those poor KS1 SATs results (which by the way the school didn't put into place until Year 4).
HTH