Hi shebird:
It's definitely the case at our school. And I don't think it will change - the forcus (pressure) is on getting low ability pupils in KS2 upper (Y5/ Y6) over that NC L4 threshold, especially as the school had disasterous SATs for KS2 recently.
My advice is do more at home. Maybe workbooks (we liked the GCP ones in literacy & maths, but there are many out there) and encourage reading (reading to themselves & reading out loud to you - where you discuss content/ meaning/ vocabulary).
Some useful websites:
Woodlands Junior School Maths Zone: resources.woodlands-junior.kent.sch.uk/maths/
Woodlands Junior school Literacy Zone: www.primaryhomeworkhelp.co.uk/literacy/
Woodlands Junior School Science Zone: www.primaryhomeworkhelp.co.uk/revision/Science/
BBC Bitesize KS2 (you can chose difficulty levels): www.bbc.co.uk/bitesize/ks2/
Free worksheets - math:
Mathdrills: www.math-drills.com/
Worksheet Works (BETA - still in design): www.worksheetworks.com/ English worksheets are American English, so may not be appropriate.
Free worksheets - all subjects (often with indication of Year - so multiplciation 3/4 - is for Years 3/4): www.primaryresources.co.uk/
Have an explore - but these are a great starting point.
With DD1 (who was floundering KS1 and then middle ability KS2 Y3/ Y4) - we found focusing on a few core things and really working on those skills made a huge difference. So if multiplication is unsteady - work on that (lots posted here on MN about help with multiplication). If division is unsteady - work on that.
Don't be frightened to type in - how to change a noun to a verb on a search engine and explore what comes up.
It does take some of your time and effort to search out good resources - but it really is worth it.
A bit of extra practice (maybe 10 minutes here or there) really does cummulative make a huge difference. Certainly at our school, it is absolutely clear those doing more at home do far better than those leaving it entirely to the school.
HTH