I really do not have much to say as I think there isn't much to be said. However,I have one or two recommendations.
'judging right and wrong'... I would have preferred 'differentiating right from wrong'
'teachers' major duty is impart knowledge'... I think '... is to impart knowledge' sounds better.
'...need not to teach anything that do not concern the academic knowledge'...why not say it this way: '...need not teach anything that does not concern academics'
'...imparted all the things included in book'... I think 'taught' should replace 'imparted' here and 'book' should read 'books'. You really do not impart what is in books...you teach it. Infact,it is the positive effect of teaching/giving that is called impartation.
Have a blissful year 2012!