A first word of caution:
Grow partnerships can be rewarding, but they can also land your ass in jail when something goes down.

Things grow partners argue about:
-division of labor
-division of startup costs
-division of bud
-who will be the person who is favored to take excess and whose friends have access to that
-whether to be cheapskates and grow GH 3 part under a batwing, or do the Canna in aero under the fancypants air cooled hood (yes, this is going to be somehting you argue about)
-who is being too free running their mouth and showing the grow off to his girlfriend with the gossip problem
-whose name is on the apartment that it happens in
-why the person mentioned above hasn't paid the electric bill on time
....etc etc etc...
Sometimes the BEST outcome is simply the loss of your best friend since you were six. Be SO careful.
Have I ever collaborated on a project with someone? Yup. But my involvement has been SLIGHT- never more than providing access to my genetics and knowledge of growroom setup.
And I've never had any expectations of reimbursement for my time.

As for discretion in my everyday life? Simple. I avoid the stoner stereotypes. I dress neatly and conservatively. I hold down a good job. I keep my lawn trimmed. I drive a soccer-mom wagon. I don't smoke before work. Jsut simple, basic stuff.

Have fun at college! Do you have a major picked out?