Sowing and reaping in exams

It has been more than 2 weeks since I last sign it. Was having exams. The final for this term is very difficult. Wish I had pay more attention, did more tutorials and exercise and wished that I had done more revision.
The last 2 week was very different compared to what I've been through thus far. Studies is never gonna be the same. I finally understood what it meant by "what you sow is what you reap" in studies. It basically means if you don't study... Don't expect good results. A classmate of mine actually failed the 1st marking. Now this is probably because she never attend class regularly (I mean how can you even pass if you don't understand the subject and yet not attending class regularly?). I'm amazed how Nicholes my good brother in Christ did well in his exam even in the last minutes of studies. It shows me that even if you sow, you still reap. Nicholes put in more effort than I could have ever put in my entire semester added together in 2 weeks time. Now I'm not judging but he really put in loads of effort. Although he may not score but at least he passed some of the subjects.
In the end, it's still comes to passing exams and scoring comes with our sowing of understanding the subject via revision, tutorials and class attendance. God can make miracles happen but I always believe that God has principals and we need to follow His principal and not wanting things our way. God is not an unfair God that rewards lazy students with flying colors and giving the same results to someone who don't work hard for it. Cause God also knows that if he does that, it will destroy that person's future as that person will not learn how to be independent and may not glorify Him.