Before revision:  The best classifiers for grades 5 and above achieve an area under the ROC curve of approximately 95\%, and for grade 3 achieve an AUC of approximately 80\%. Our results suggest that it is feasible for schools to  screen a large number of students for their riskof obtaining below standard achievement a full two years before they are identified as achieving below standard on their next NAPLAN test .
After revision:  The best classifiers for grades 5 and above achieve an area under the ROC curve , suggesting that it is feasible for schools to screen a large number of students for their riskof obtaining below standard achievement a full two years before they are identified as achieving below standard on their next NAPLAN test .