Patna: The sons and daughters of a cobbler, daily wage labourers and a landless farmer, among others, have cracked the highly-competitive IIT-JEE exam this year thanks to a free coaching centre for underprivileged students in Bihar.

Wards of poorest of the poor comprise 27 of the 30 students of the Super 30 institute to pass the exam for entrance into the prestigious Indian Institutes of Technology (IITs).