Student unions

Every political party in India has a Student union like NSUI of congress,ABVP of BJP ,SFI&AISF of communists .All i noticed is only a few unions fight for the interests of students some of those r ABVP,SFI,AISF.All other work for the political interests of the respective parties.what do the political parties have to do with the student unions.Student union leaders are later the youth wing leaders of political parties.Many of the student union leaders are not in a mood to complte their respective UG or PG courses.A Student leader meaans he should be guidance to other students and  I bet 90% of them are not so.Now a days they are playing key roles in Settelments.A past Student who wants this tradition to change