[teekert]

Not in the Netherlands, most older kids (>12) bring a lunch box, usually filled with 4 slices of bread with cheese, meat, "hagelslag" or peanut butter (we call it peanut cheese and it is almost only peanuts). Children until 12 often eat at home during the afternoon although that is rapidly changing. Many children now spend lunch time at school, I think the cost is ~1 euro for some slices of bread with topping as mentioned before, they are helped by volunteer parents.

My 4y/o brings a box to school with 1 piece of fruit (some bring a cookie/oat bar or something but the school encourages fruit) and a bottle of water which is eaten around 10:15 I believe. I think this is only for young children.

By the way, if a kid forgets his or her fruit they make it point to share, I like that policy. Also I hear from colleagues more and more schools are switching to water only to battle weight increase in children, although this leads to some discussion :)

Edit: see below, the Netherlands is waking up I guess :)

[Underqualified]

In Belgium it's pretty much the same. Except that it's usually a cookie and a piece of fruit they bring (morning and afternoon snack).

Some schools (kindergarten, primary and secondary) do offer the possibility to buy lunches. But those are quite expensive (more than $2, for 4y olds in my kids' previous school) and not very healthy, since at that scale, cost of food matters a lot.