The supply of the right number of places isn't something one needs an educational professional to sort out. This is straightforward demographic profiling. It's not exact as people move around, councils do not automatically know which households have children, hospital catchments don't match council areas. But pretty good estimates can be made.
The role of DofE in this is surely limited to ensuring LAs are doing this profiling and planning, and in having a dialogue about costs, which aside from the fiasco of BSF are normally LA responsibility.
LAs took the financial benefits of school closures during the low-birth rate years - which also co-incided with the economic boom - and now has to restore them during a down turn. This is going to be tough.
I know this is "bash Gove" week - but I think on this one, it's the LAs which need to be in the firing line. The latest legal review about class size limits was brought by an LEA.