Local School Leaving Ages

At present primary schools in North West West Sussex such as those in Rogate and Rake finish when children are ten years old whilst nearby ones such as Liss primary school finish at eleven. This restricts parent's choice, discouraging Hampshire parents from using excllent Sussex primary schools whilst making it difficult for West Sussex parents to put their children forward for equally excellent Hampshire secondary schools. I can't see good reason not to standardise school leaving ages at 11. Doing so would make our small local primary schools more attactive whilst increasing secondary school choice.