Final attrition WT2008_X 6074 weight 2008 PISA weights added to dataset Sample weight WT03GEN_P 10370 2003 (PISA population) Attrition weight ACH03WT_P 10370 2003 (PISA population) Final weight WT2003_P 10370 2003 (PISA population) Sample weight WT04GEN_P 9378 2004 (PISA population) Attrition weight ACH04WT_P 9378 2004 (PISA population) Final weight WT2004_P 9378 2004 (PISA population) Sample weight WT05GEN_P 8691 2005 (PISA population) Attrition weight ACH05WT_P 8691 2005 (PISA population) Final weight WT2005_P 8691 2005 (PISA population) Sample weight WT06GEN_P 7721 2006 (PISA population) Attrition weight ACH06WT_P 7721 2006 (PISA population) Final weight WT2006_P 7721 2006 (PISA population) Sample weight WT07GEN_P 6658 2007 (PISA population) Attrition weight ACH07WT_P 6658 2007 (PISA population) Final weight WT2007_P 6658 2007 (PISA population) Sample weight WT08GEN_P 6074 2008 (PISA population) Attrition weight ACH08WT_P 6074 2008 (PISA population) Final weight WT2008_P 6074 2008 (PISA population) Minor modifications made to some derived variables Current XCEL2004 2 qualification level XCEL2005 16
Final attrition weight 2008 WT2008_X 6074 PISA weights added to dataset Sample weight 2003 (PISA population) WT03GEN_P 10370 Attrition weight 2003 (PISA population) ACH03WT_P 10370 Final weight 2003 (PISA population) WT2003_P 10370 Sample weight 2004 (PISA population) WT04GEN_P 9378 Attrition weight 2004 (PISA population) ACH04WT_P 9378 Final weight 2004 (PISA population) WT2004_P 9378 Sample weight 2005 (PISA population) WT05GEN_P 8691 Attrition weight 2005 (PISA population) ACH05WT_P 8691 Final weight 2005 (PISA population) WT2005_P 8691 Sample weight 2006 (PISA population) WT06GEN_P 7721 Attrition weight 2006 (PISA population) ACH06WT_P 7721 Final weight 2006 (PISA population) WT2006_P 7721 Sample weight 2007 (PISA population) WT07GEN_P 6658 Attrition weight 2007 (PISA population) ACH07WT_P 6658 Final weight 2007 (PISA population) WT2007_P 6658 Sample weight 2008 (PISA population) WT08GEN_P 6074 Attrition weight 2008 (PISA population) ACH08WT_P 6074 Final weight 2008 (PISA population) WT2008_P 6074 Minor modifications made to some derived variables Current qualification level XCEL2004 2 XCEL2005 16