If a SC student gets above 65% marks in Intermediate and around 80 to 90 marks in EAMCET either in Telangana or AP, one may get rank around 20000 to 25000. With this, a student should be able to get free seat in any subject in All government colleges and top private colleges. Getting better score will aid in better college.

The marks vs. rank depends on difficulty level of paper also.

But getting JNTUA is not so easy. 

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