Passed But Failed

Wait is over for me to repeat the 3rd year 1st semester. I enrolled for the 1st semester in the 3rd year. This is my 2nd year in being a Junior student. The office gave me a MOA (agreement) pertaining to my grades for the new curriculum and also states there that I am an irregular student until I pass the subject. If I fail again this subject, the college will kick me out. The sad thing is that I did not read the whole agreement and just signed. MY BAD!
 I only have one subject, the Nursing subject I failed before and together with that is the RLE duty in hospital. I studied very well and tried to be very early in the duties. Well, to my luck, I PASSED! Now, the 2nd semester. I enrolled again and no MOA was given to me since I passed the 1st semester which means that I am now a regular student. Yahoo! I was very confident that I will be able to pass and just took the subjects very lightly. Yes, I did study but I did not give my best. I was a happy-go-lucky that time and just goes with the flow. I had my cappine by then that semester. It felt good, my parents were happy for me and they attended the ceremony. Finals came and I know I was gonna pass everything! Well, deliberation day came and the whole class gathered for the announcement of grades by the adviser. My adviser was nice and kept everything confident. She called us one by one alphabetically and discused the grades. I was waiting and was very excited! I am going to 4th year! My adviser call me. She discussed the grades and told me, you were doing good, but not great. You should have done much and tried your best. I asked her why because as far as I know, I passed because I got a passing grade. SHe told me, "No, that is not the required grade you need, you are in the new curriculum now so the grade you should be following will be the 80." I was shocked! I was blank! I don't know what to think and what to do. She then asked if I read about the MOA becuase it stated there about it. I never answered anything. I just told her ok and I will just tell my parents. Wow. What I felt that time was disappointment to myself. I thought that I was going to 4th year and soon will be graduating! One more year and I will graduate. But it was all gone, everything's different now, just because of my being ignorant for not reading the agreement well and fully.