it is Essay for admission

I’m stuck on a English question and need an explanation.

I need essay one page about reapplies for admission in the Catholic University of America. I was student in this university but I took this semester off because I have some bad circumstances with my family. The problem is that I dropped my classes but I did not do the leave of absence, I forgot to do it. So, now I am trying to get the admission because I really want to complete my education in CUA. I want you to explain my reasons in one page. if you did not understand any thing ask me.