Is it though? Without determining the cause by looking at the underlying factors, I don't think we can conclusively say it's a solution. It could be, but it might not be if this is based on something like "people who are late to registration are late to class", people who have fuller schedules require earlier classes to fit it in, or something. Hell, it might even be that the professors who teach in the afternoons are more relaxed in personality and grade more leniently.