In a written reply to a question in Rajya Sabha, HRD minister Smriti Irani said there were 640 complaints in 2013, 543 in 2014 and 389 in the year 2015.
Replying to another question, Irani in a written reply said there are 2,463 teaching positions vacant in IITs and 5,987 in Central Universities.
She however added that research scholars, contract,adjunct and visiting faculty contributing to teaching-learning process more than adequately compensate for these vacant positions.