Hi,
I live in France, also with three children in state school. There are no French-English schools. Another option is international school in Basel, which would be in English, but it's expensive, and obviously not great for integrating if you live in France. The schools do help children coming from abroad with extra French classes. I knew someone a few years back who got a lot of extra classes in Widemann school in St. Louis - I don't know if this is still the case, as things change a lot these days in the school system (and also depends on budget of schools).
It's the townhall - mairie - of each town that regulates the schools on a local level, so they are your best first point of contact. If you're not sure where you will live, you could just contact one - eg St Louis, Hegenheim, Blotzheim - check out here for some information and contact details - http://www.saint-louis.fr/index.php/...ontextuel=true
I hope you'll also get some responses of integrating children recently. There are lots of nice towns for bringing up children, but I think I would consider Hesingue, Hegenheim and Blotzheim, maybe Bartenheim.
I've just had a look at your other posts. If you have a chance to come and look at the towns it will make your decision easier. We decided to live in St Louis for transport links. I find it very convenient. The bus to Basel is every 20 minutes (except at night, Sundays) - the 604. Similarly, there is a 603 bus to huningue and Village neuf. So they are the most convenient. Looking back, not sure if I would have chosen St. Louis - it's a small town, but I am not that happy with some of the kids behaviour - eg my 7 year old tells me it's normal that all the kids curse. In many classes, the teachers have at least a few problem kids, and that keeps the class back. In my son's secondary school, any boy who gets a haircut gets slapped on the head. Some people may think these are small matters, but I think it's probably better in the villages, which are often prettier too. But on the other hand we can walk/cycle to cinema, swimming pool, shops, Basel. For me, once we had moved here, I did not want to move the kids to another town again. If you are intending to stay, you may also like to consider the local college - secondary school, as your eldest will start there at 10.
Financial considerations; not sure if you know but they are changing the law regarding private health insurance, so that it will cost a lot more to be insured - at the moment there is talk of paying 8% of your salary to be covered by the national healthcare system CMU - see other threads about this(before you could choose your insurer and this could be a lot less, depending on your salary). I mention this because, for newcomers, it makes France less attractive financially.
Sorry to be negative, but I know it's best to have all the info before you decide, and I remember how difficult it was for us to decide. At the end of the day, it's also not that easy to find a house exactly where you want, so that will be a factor unless you're willing to wait. I'm Irish too, by the way. If you have any questions, just let me know, here or by pm. Good luck!