Romney hasn't been silent about school in general, which I think would include the lunch program. He has said quite often that control of schools belongs with parents and teachers, not bureaucrats in Washington and certainly NOT with the teacher's unions.
I don't understand why no one makes the connection between failing schools and the changes that have taken place over the last many decades. The more control is given to the "educrats", the worse the outcomes. Return education to the local level, and put the parents and teachers in charge. Then equalize the school funding throughout the state so every school gets the same $$ per student served.