Sparkly
Yeshivas and Seminiaries do not teach you this, however prostelizing is not really acceptable in the greater world and can get you into trouble if done incorrectly.
College Campuses and even more so work place environments, you have to be real careful what you say and do. You can be punished for prostelizing. A simple example. You are in an office with a co-worker who is not religous and you hear them over the phone discussing their friday night plans which includes going to McDonalds and Having a cheeseburger and then driving elsewhere. You are not allowed to say anything.
On a college campus you might see a table for Zen Budaism and someone you know is going over for that table. you cannot stand near that table and block people from going to the Buddiast table with the statue of the Buddah. The dean can reprimand or expel you for doing so.
Groups that do kiruv on college campuses and workplace environments know how to maze through these things (Regardless of what might have been heard, Hillels, Chabads etc are welcome on college campuses, just as long as they follow the rules..which isnt as hard as you think)