Stereotypes or social categories?

In this Faculty there different stereotypes, according to I believe, are configured in relation to the social origin. Namely, according to the inheritance economic, social, and cultural. However, as this are a Faculty on social sciences, this feature is relative. In my view, exist a most of students that try hide this feature owing to the same social awareness that led them to choose a career in this Faculty. About this stereotypes, some people call "abajismo", doing the parallel with the "arribismo".
I think that, in my Faculty nott only is there this type of people. Also exist students coming from middle class , and his stereotypes are not characterizable as abajista.
Exist other type of sterotypes, are those students that involved in politics, or try act together forming groups that help them achieve what they want, generaly, a more just society, through the fight for a fairer education.
Finally, I believe that too exist a big gruop of students that noy remain the previous categories. Are students that have not common features, for this are difficult find stereotypes.
I think that cant classify in some sterotypes, believe that have belonged the last bog group, Students who have little in common with each other. Perhaps it would necessary set up others criteria of classification, others stereotypes.
Jp.