Top Professional Courses After completing 12th grade in arts & commerce stream are Bachelor of Arts (B.A), Bachelor of Commerce (B.Com), Bachelor of Business Administration (BBA), Bachelor of Computer Applications (BCA), Diploma programs and other Short term certificate programs. Apart from these, several UG courses after the class 12 science stream are Bachelor of Science (B.Sc), Bachelor of Engineering (B.E), Bachelor of Computer Applications (BCA), BBA, BDS, B.Arch, and Diploma programs. The