“…Although the SER movement has provided a great deal of evidence regarding differential school effects (Mortimore, Sammons, Stoll, Lewis, & Ecob, 1988;Nuttall, Goldstein, Prosser, & Rasbash, 1989;Strand, 2010), the school VA effect appears to be the one attached to an educational agenda that is concerned with quality in education and the "wish of politicians to get better value for public expenditure" (Saunders, 1999, p. 234).…”