Full portions for third Mid-sem

Today there was a circular reading that the third Mid-sem exam would have full portions so that it would be rehearsal for the final semester exams and it is compulsory to attend all the three mid-sem exams this time.This is the most annoying circular.!!!How come full portion can be covered in just a 50 marks paper....Would the three days time would be sufficient for preparations.Lots of questions in students mind and no one has the answer.
What is happenning to SASTRA?????