("ST"s) are Indian population groupings that are explicitly recognized by the Constitution of India, previously called the "depressed classes" by the British. SCs/STs together comprise over 24% of India's population, with SC at over 16% and ST over 7.50% [1] as per the 2001 Census. The proportion of Scheduled Castes and Scheduled Tribes in the population of India has steadily risen since independence in 1947.
Post Independence Scheduled Castes have been benefited by Reservation policy. The policy was made an integral part of Constitution by the efforts of Dr. Ambedkar, who is regarded as the father of the Indian constitution, participated in Round Table Conferences and fought for the rights of Depressed classes. The Constitution lays down general principles for the policy of affirmative action for the SCs and STs.