What has been held by the Supreme Court in State of M.P. v. Nivedita Jain?

In State of Madhya Pradesh v. Kumari Nivedita Jain
the Supreme Court dealt with the question of admission of students to the M.B.B.S. Course in the State medical colleges. The Government of Madhya Pradesh framed rules providing for a minimum of 50 % as qualifying marks for the students of general category for admission to medical colleges but for the students of Scheduled Cates/Scheduled Tribes, the minimum was zero. Upholding the validity of the rule, the Supreme Court opined that entry 66, List I, did not apply to the selection of candidates for admission to the medical colleges because standards would come in after admission of students. The Court ruled that entry 25, List III was wide enough to include within its ambit the question of selection of candidates to medical colleges and there was nothing in entries 63, 64, 65 and 66, List I to suggest the contrary.