Well in that case we will definately be looking into this. I'd rather get to the bottom of this issue and as you say it seems that everything else has been covered. We don't have much more to go on anyway I'm guessing that we will soon see what the issue is and hopefully we can deal with it quickly and appropriatly. The only thing that makes me believe them is the fact that Sam and Callum have both been there wen issues have happened either when they have been on 'pick up' duty or when they have been out with the kids.
However as siblings they might be covering. They never spill the beans on what Cameron or Maddie tell them, so it could be a case of needing attention and they're covering for them as older brothers often do (I know my older siblings covered for me and I covered for my younger siblings). I suppose we'll know when Charlotte spends some time in the current school next time I'm guessing. One thing we do know is that bullying was an issue at the first two schools because we wern't the first parents to move their kids from either school, oftenb the same time as us. But the last one isn't really a school with a history, neither were the others but the issues were big when our kids went there (and still are at the second, not to sure about the other).
Anyway im sure we'll see