which is best college for preparing three years course

Dear candidate, you not specified you are talking about which three years degree course. Mostly colleges of Delhi University are ranked at top. Different courses have different colleges at top. Let me mention few of them:

Top three colleges of BBA:

• Shaheed Sukhdev College of Business Studies
• Department of Management Studies Christ University (Deemed to be University)
• Loyola College

Top three colleges of Bcom:

• Shri Ram College of Commerce (SRCC)
• Lady Shri Ram College for Women
• Loyola College

Top three colleges of BA:

• St. Stephens College
• Hindu College
• Miranda House

Top three colleges of BSc:

• Hindu College
• St. Stephens College
• Miranda House

Top three colleges of BCA:

• Department of Computer Science Christ (Deemed to be University)
• Symbiosis Institute of Computer Studies and Research
• Loyola College