Threatening Y2 children with tests is appalling practice, and so are endless revision sessions.
When the school is moderated by the LEA, they will be required to produce lots of evidence to explain how they arrive at their teacher assessments - the tests are just a tiny part of this. Over reliance on the tests will see them 'fail' their moderation, and they will be heavily policed supported until they get it right.
The tests should only support assessment for children working at level 2 or above - they aren't appropriate for children working at level 1.
As previous posters have explained, children should not even really know they are completing the tests - they are normal everyday activities that the children will be used to doing as part of normal classroom practice.
Am scandalised at the story of the y6 child who was 'made' to complete a Maths KS2 paper when working on P scales - it was totally inappropriate and of course would be distressing for the poster's poor dd.
I doubt, however, that it was your dd who was 'removed' from the figures - this is in practice absolutely impossible to do, as the names and details of the children involved are held centrally by QCDA. The only way you can get a child removed from the figures (and even this takes ages, with lots of evidence required) is if a child has been in the UK for less than one year at the time of taking the tests, and English is their second language.