Horse meat in Scottish Beefburgers

The Scottish Government is enquiring as to how horse meat got into beefburgers supplied for school meals.
In view of the fact that Scotland is said to have the highest child obesity rate in the UK, surely the wrong question is being asked. Logically the more important question is
"Why are beefburgers being served in schools?"
Governments pontificate about obesity, want to ban fast food shops from the vicinity of schools, and then set about serving the very same food as that they are complaining about.