Wouldn't a competent teacher who was paying attention to the students know which ones were not keeping up without using a standardized test?
Kedụ akara miin agbammbọ ụmụakwụkwọ ndị e ji ngwa nkụzi nụrụlere kụziere aghọtaazaa na nke ndị a na-ejighị na mmeta nke ọma ha n' ule aghọtaazaa?