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Notes
1. Actually, the provenance of school effectiveness research can be traced to Coleman (Citation1966) and Jencks (Citation1972), who famously concluded that differences in attainment would be affected by less than 1% if all American high schools were equally effective (Mortimore, Citation2001).
2. School effectiveness and school improvement research differ subtly in respect of this, their relationship with theory. School effectiveness is essentially experimentalist and testing of theory; school improvement is about coalescing what is known and is developing of theory.