Peachpudding, my children attend an Islamic school the school asked that all children bring in packed lunches regardless of whether they are fasting or not.
I'm not sure what more anyone can do.
I didn't wake my girls for the pre-dawn meal and my youngest is now not speaking to me, I don't want them to fast butthey do, I may let her try the last few days if she wants on the provisio she eats when she wants to.
Most children that I know have fasted half days so eat at midday, that's quite a popular way of including children, some children will do one day out of the entire month of ramadan, on a weekend so doesn't affect school.
I did my first fast when I was seven, I remember it pretty well, it was also in summer, I fasted on a weekend and I was so so so determined to carry it thro and I did, much to everyone surprise (my mum trying to coax me to break my fast because I had fasted long enough and telling me stories to encourage me to break my fast early).
I don't know how to force a determined child not to fast.