?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Blatchford%2C+Peter&rft.aufirst=Peter&rft.aulast=Blatchford&rft.pages=709-730&rft.volume=29&rft.title=British+Educational+Research+Journal&rft.atitle=Are+Class+Size+Differences+Related+to+Pupils'+Educational+Progress+and+Classroom+Processes%3F+Findings+from+the+Institute+of+Education+Class+Size+Study+of+Children+Aged+5-7+Years&rft.issn=0141-1926&rft.issue=5&rft.date=2003&rft.genre=article