“…At class level this phase was addressed in none of the studies included in our review and meta-analysis. This in contrast to the next phase in the cycle, feedback, which was addressed in two third of the studies included in our review (Brandsma, 1993;Carpenter, Pashler & Cepeda, 2009;De Fraine, Van Damme, Van Landeghem, Opdenakker & Onghena, 2003;Hill & Rowe, 1998;Hofman, Hofman & Guldemond, 1999;Klieme & Rakoczy, 2003;Kyriakides, 2005;Levacic et al;Lockheed & Longford, 1991;Rakoczy, Klieme, Bürgermeister & Harks, 2008;Reezigt, 1993;Reezigt et al, 1999;Senkbeil, 2006;She & Fisher, 2002;Van der Grift et al, 1997). Various aspects of feedback were covered in the primary studies, such as the primary users of the feedback, the types of feedback, as well as the timing of feedback (immediately versus delayed).…”