?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Korilaki&rft.au=Korilaki%2C+Panayota&rft.aufirst=Panayota&rft.date=2005&rft.degree=Doctoral&rft.tpages=445&rft.title=Attainment+and+progress+differences+associated+with+ethnicity%2C+social+class+and+gender+throughout+the+6th+grade+of+primary+schools+in+Greece+and+ways+to+alleviate+them+%3A+a+study+of+primary+school+effectiveness&rft.inst=Institute+of+Education%2C+University+of+London