so many catergories come under this topic, most people blame the cheap fast food industry for glamourising food that is unhealthy and fattening, others blame schools for not providing healthier lunch options and extra hours of p.e. in the week, and others blame the mothers for giving the kids the food, yet everyone forgets that its the CHILD who chooses to eat all this food- concentration should be focused on educating the kids rather than amending anything else!!! am i wrong?

No you're not wrong and this isn't something that should be done by anyone else other than the parent/s.
The schools are limited as to what they can teach, they do teach kids about vegetables, vitamins as well as diseases associated with their deficiencies. But ultimately it's up to the parents what the parents feed their kids even if the schools offer healthy meals.
Usually obese kids eat junk together with their parents. It's not genetic most of the time, it's just unhealthy eating habits which can be curbed.
Some people eat for comfort, problems etc. Even if they do lose the weight, they can gain it back if the 1st thing they think of when depressed is food.
The availability of junk food doesn't help, but quite frankly even if it wasn't available people would still find alternatives.
It starts within the family.

Parents. Their child, their responsibilty.

Parents should be regularly prosecuted for negligence and grievous bodily damage. Friends, family and teachers who fail to report overweight kids should be charged with conspiracy. If you saw someone with his face bashed in with a crowbar laying on the street you'd call an ambulance, the same goes for a parent who is clearly attempting to give her kids heart disease.

the parents - everytime...

The parents are obviously to blame for not overseeing what children eat at home, but it's worth noting that a lot of schools do not closely monitor what children eat when in their care.

At my school for example, we had a dinner hall which had a salad bar but that's it healthy food-wise. Everything else was chips, pizzas, sausage rolls, roast dinners, fattening sandwiches, cakes, crisps (the list goes on). It also had 3 vending machines around the school selling cans of fizzy drink, crisps and chocolate. However 3 years ago they took all the vending machines away and only had one that sold snack-a-jacks and smoothies (which, may I say were 80p and £1) and stopped selling the packaged cakes at break time, also they had one "no chips" lunch time out of five, ONE! They still sold chocolate crunch, burgers, teacakes, pizza slices at the breaktimes. Also, children are allowed to leave the premisis at dinner times, every few years we had a slip for parents to sign concerning leaving at lunch time but no-one ever got asked for proof of being allowed to leave as a set of gates were always open for cars to leave and come in. A 5 minute walk up the road there's a row of shops which has 2 chip shops, about 6 takeaways (indian, 2 chinese and about 3 pizza, a cooplands and a sandwich shop that sells those HUGE breadcakes with bacon and other breakfast foods in for quite cheaply. This row of shops is RAMMED at lunch time. I know this is only a personal example but in my experience some schools are no way strict enough on the opportunities there are to leave school at dinner time. There's far too much opportunity to eat rubbish at school, and for a lot of kids it's like "time off" from eating the healthy stuff at home, so parents can't always be blamed.

Come to think of it, when I started secondary school in 2000 we had a burger van ON SITE of the school. Jamie Oliver would have had a field day ...

Going back to the parents for a minute, I think it's awful when parents preach about healthy eating yet eat rubbish themselves. It sets a terrible example.

It's down to the parents to educate their children on healthy eating but when alot of parents don't know themselves or don't care then it gets out of hand.

The child does have a mind of its own here. You don't just treat it like a robot- and expect it to take whatever you give it. Does anyone actually ask the child what they think of it all?