Be responsible with your knives---also, be discreet.
Other don't have to enjoy your knives---that's your job only. If you need someone to share your knives with, post your pictures here or go to a show in your area.
I try to give those that disagree with carrying knives a bit of edge-u-cation myself; those that are condescending, spiteful, and mean, I'm not above giving an "up yours." I don't respond well to ignorant behavior.
If your parents are concerned about knives, perhaps try showing their usefulness around the house. "Hey mom, do you need help with supper?" A good slicer can be used on those green peppers, onion, etc., and will show a perfectly safe, utilitarian manner in which to use your knife---they'll know for sure it's a handy tool, not a scary weapon. There are hundred of other case-specific chores you can help out with by using a knife.
You might decide on carrying traditional patterns---sheeple sometimes go ballistic when I pull out my Spyderco Military for a cutting chore; the reaction is much less drastic if I use my Case Large Stockman in CV.
On the note of knives at school, a pocket check is a good idea. I always check the pockets of my pants before leaving my truck to go inside in the mornings. Any stray knife I find gets locked inside a Samsonite briefcase behind my passenger seat. This covers the legal issue two-fold---the truck is in my dad's name ("I did not knowingly possess the knife---it's my dad's truck.") and the briefcase requires a second searchwarrant and does not give the school any right to search it (this is at least the case in Ohio).
Just be careful, be respectful, and be responsible.
Good luck.
i have been buying more non tactical knives. my normal edc is a purple griptilian with a 555HG blade i swapped out from another griptilian and a leatherman skeletool. and just posting pictures on the forum isnt the same as talking to a friend in real life. thanks to everyone for posting a response.