why do the students dont let the teachers to teach!!

I think now a days students do not respect their teachers as they used to longtime ago. Some of the students are do not come to colleges for studying. They came only for time pass. One of the way to deal with it is to divide the students who does well and not well into two divisions. The students who studies well and who respects teachers should be placed in one division and less attention is required for these type of students. The second class of students should be given more attention and more time should be spend and extra clases should be provided to them. Also class psychiatrist should give classes once in a month to deal with the behavioral problem students. I think the people who are disturbed in life or have some problems are the one who creates problems and disturb others. I think it is one of the rule they follow as give what you get.