As many as 45 students were debarred on Thursday for indulging in malpractices during the second-year Pre-university supplementary examination. The highest number of cases have been reported from Bijapur 13 followed by Gulbarga (10), Bangalore North and Bidar (4 each), Haveri and Dharwad (3 each), Bellary, Bagalkot, Shimoga (2 each), Bangalore South and Kolar (1 each).