Anna University — abi revaluation results

I am v. Vaishnavi from prathyusha engineering college. I am a 1st year biotechnology student, i have got my 1st semester results and my python marks are low which i did not expect. I got a b+ in python inspite of all my hardwork. I applied for revaluation and i received my paper and i was shocked that i only got 63 in the valuation and my actual marks after my teachers correction was 89 which would give me a o grade after adding the internals. But when i got my revaluation results i was not able to believe that i only got an a grade and not even a+. After all my hardworks i am only getting an a grade also after spending money for revaluation. This makes me think why should i do hardwork, for getting less grade. If this continues then students will lose hope and stop believing the anna university. If the teacher expects answer according to his point of view then no one can get good marks and if you want us to write what you expect then provide a standard textbooks to all colleges. Also every teacher has their own teaching method and you can't expect everyone to teach the same.