Question

i'm doing an argumentative essay about how hazing for fraternities is dangerous.

do sororities have hazing too or is it only fraternities/

Answer 1

Apparently sororities also have (or had) some hazing. However, these sites point out that hazing is forbidden by most or all Greek organizations and campuses.

http://www.stophazing.org/sorority_hazing/index.htm

(Broken Link Removed)

http://www.jour.unr.edu/interactive/hazing/greek_sorority.htm

http://en.wikipedia.org/wiki/Fraternities_and_sororities#Hazing_issues

Answer 2

It is less common that fraternity hazing, but it does happen. Check this out:
http://www.jour.unr.edu/interactive/hazing/greek_sorority.htm