Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: parent exact "EARLI 2021, 19th Biennial EARLI Conference, Proceedings" Add to list Conference Paper C1 open access Grade retention effectiveness research in Europe : state of the art Timo Van Canegem (UGent) , Mieke Van Houtte (UGent) and Jannick Demanet (UGent) (2021) EARLI 2021, 19th Biennial EARLI Conference, Proceedings.