Impure heterosexual relationships, habitual tardiness, ignoring teachers. Gather problematic students and instill greetings, manners, respect, and a sense of shame. Make them compete naked in front of everyone. Force them to strip even if they refuse; after measurements, have them say, 'Thank you.' If behavior or measurement results are bad, punishment follows. Spanking, caning. Then, male reproductive ability tests. 'Help your friends out' and make them serve using their bodies!
