In the recent U.K. television series Jamie Oliver attempts to gain access to
LA's schools kitchens, to help them rustle up some cost effective yet
nutritious food for the children, as he did with the schools in the U.K.

LA's school board seemed dead set against him making any headway with this
project, and barred his participation.

I can't understand the board's motivation. Why would take this line? Since
you would think they would have the interests of the kids at heart, helping
them with their diet.

What could be their motivation in stopping this nutrition project, I wonder?