Well the movie has something in it. It may start without a hope and continues as a normal routine but the way the child strives to fight his destiny with hope and hard work will never be calculated. People who recognize the talent and can do much to help this kid reminds us a current society we are living in. The child being truthful ready to take responsibility for his actions not neglecting his passion and hard work to get a hold on education reminded me of how unlucky most kids are in the third world countries this is not a lesson to kids but a realization for all the elders that he can be a successful person not materialistic wealth wise but he will achieve what he loves.
A small note : the letter which was addressed to Kalam in the climax was simple but full of words that can get through anyone.