fivecandles not really arguing that you couldn't do things in the 4 weeks holiday but if my DH is away for 6 months in the year then the long summer break for us is good as he gets leave. As it is if he hasn't been away for 6 months he does usually (not this year) get 4 weeks block leave during the holidays. In the other weeks we visit relatives and take some chill time. Mine get around 9 weeks off for the summer and we love it, need more of it to be honest. They do also get 2 weeks in October which is just appalling, its too wet to go outside, not snowy enough to ski anywhere, too cold to camp and we can't afford with 4DCs to go away somewhere hot so end up stuck inside getting on each others nerves trying to work through the homework they get and not having that much fun.
My comments about poor children were just that, mainly sarcastic and due to one poster saying about how they couldn't afford to entertain their children through the long summer break, was mainly trying to point out that it doesn't have to be expensive (with 4 DCs I am the queen of free outings)
Many schools do still get the 2 week Whit holiday and this year as easter was so late it didn't work for us very well, mine were off for a month in April (with Easter, royal wedding and end of term break) and then again not that long after for half term, the in and out of school affected them far more than a long break they didn't know if they were coming or going.
If you look at another thread on here about why boarding schools have such long holidays then you may understand why some of us would be reluctant to give them up. When we live abroad and our DCs (hasn't happened yet but will in the future) are at boarding school the amount of travelling (i.e. friends of ours DCs were in boarding school they were in Oklahoma) it took the children 2 days travelling from after school broke up to get home, if you were having more frequent breaks this would mean the majority of their holidays were spent travelling not spending time with their families
One size will never fit all, and yes we are being skeptical but maybe we need to try it out in some test schools before suggesting it for all schools. I do see your arguments, they do make sense to me but my opinion of what is right for my family is that it wouldn't work. Sorry must agree to disagree :(