High school teacher drank with students

Last month, three teachers of high school and thirteen students participated in the training camp of basketball in Mie prefecture. And one high shool teacher got drunk with his students. He admitted that he was wrong and said "Because students say that they want to drink, I let students drink against my better judgment." I think that of course this teacher should be punished, but other two teachers who did not stop are also bad. Besides, students had to think even future and cotrol their judgement and mind in order not to give trouble to not only themselves but also other people like school and their family.