Do boys who learn and go to college at night generally start working (at least part time) as soon as they finish their degree. By agreeing to a boy in this situation, are you agreeing that he will stop learning full time as soon as college is up? Have you heard of boys who get the degree and continue learning for 2-3 years later and then start working?
Also – which hours are considered “at night”? Does “night” start from 3:30 and continue til 9? or is it literally a person that is in college just when it is dark outside? Meaning he learns in kollel the whole day and then goes to college at night as an aside – maybe 1 or 2 classes each semester.