Since the early 20th century, educators have discussed and implemented alternative forms of education, such as Rabindranath Tagore's Visva-Bharati University, Sri Aurobindo's Sri Aurobindo International Centre of Education, Jiddu Krishnamurti Schools. Traditional learning in India involved students living in gurukulas, where they received free food, shelter and education from a guru ("teacher" in Sanskrit). Progress was based on tests given by the gurus, and the system aimed to nurture students' creativity and personality development.