Who is responsible?

Professor M Zahidul Haque, Chairman, Department of Agricultural Extension & Information System SAU,
A group of undergrad students of certain level of our university recently left a note of greetings (of course in a different style) with a marigold flower pasted on our doors with transparent adhesive tape saying “Baromasher Semester, Salam” (Twelve months' semester, greetings). Well, the duration of a semester is normally six months. But due to some internal problems our semester is lagging behind. Now the question is, who is to blame for this delay in semester completion? -Me or my colleagues (teachers)? -The students? -The administration? -The prevailing situation on the campus?