On the first viewing, I was too distracted by the simplicity of the plot, the characters' need to pontificate all too often and the old-world Bollywood technique of emotional manipulation to tug at your heartstrings. I found it to be an average film.
But after a second viewing (which I was drawn to for no conceivable reason), I was moved by the story and the connection between the characters came across in a much more effective way. The teacher does not seek to impress/command to the students but be like a guide and inspire them while being "at their level". Don't be fooled, the film's power is in its simplicity.