The Effects of Transfers on Student Performance

If the student transfers and you can't resample them, that's just going to be a no value. So if they transfer and this causes missing value or non-resubundance, then we don't have bigger concerns. But what we are concerned are that for the students who drop out of the study or who got transferred and were lost to track of them,. They tended to have a different assessment performances from the students who stay in that study. That may cause potential bias if we want to look at the overall children's performances.