First of all, Karan Johar directed ‘ Student of the year’ movie and he is the producer of ‘Kalank’ movie and not Kalank’s director. Kalank movie director’s name ‘ Abhishek Varman’.

Now the question is why he directed student of the year movie. So, let look into its answer. Actually Varun and Siddharth works as assistant to Karan’s film. Karan observed there bonding and their friendship and he decided to make a movie to launch both of them. So he came up with the idea of Student of the year movie.