Hello,

Some of the top colleges offering BSc Computer Science are-

• Loyola College, Chennai
• St Xavier's College, Mumbai
• Christ University, Bangalore
• Fergusson College, Pune
• Mithibai College of Arts, Mumbai

If you specifically ask for Kolkata, there are St Xavier's Kolkata, Scottish Church College, Shri Shikshayatan College,Vidyasagar College, Ashutosh College, Jogesh Chandra Chaudhuri College.