Get your Priority list and do the due diligence
Talk to the senior HoDs / Staff
Talk to the Alumni working in great Organizations
Check the quality of International Conferences /Seminar / Workshop held
Check their Academic wins in Conferences /Seminar / Workshop held
Check their NBA Ratings
Check their NAAC Ratings / Reviews
Check their NIRF Ratings
Check their Placement History for last 10 years(at the least)