First time to this site, have 19 year old son in college, who has everything,car,paid college,insurance, spending money as needed, found 7-9 small bags of marijuana in car Thanksgiving, and found out he tried LSD for the first time during the Thanksgiving Holiday. He was an athlete in High School, and constantly challenged parental rules of curfew, etc. When I found the grass, I immediately destroyed it, took away his "nice" car, and gave him an old family car that would just make it back to school. We confronted him with the issue, and says grass is no big deal, and that he won't ever try the LSD again, but would not committ to not using grass. We stressed our objections and said we would not subsidize this kind of behavior, and allowed him to drive back to school, and finish the semester. He lives in a dorm. As I type this, I have just spoken to him, the semester is over, he has stayed at college two additional days partying, and he is driving with two other "user" friends, as they are going to a concert. I asked him to call me when he could talk without them present. As he was to be coming home over the Holidays and we have two younger children, I wanted to make sure he knew of our new House rules. He could have his new car back but would have to submit to periodic drug tests and make a 2:00am curfew every night, and no "sleepovers" at anyone elses house. When he finally called me, He was very defiant, saying he would bring back the clunker, and just wouldn't move home and would make due somehow. Question: Am I right to not subsidize his behavior, and protect our younger two children from a very bad example? They do not know of his drug use, but just of his defiance and extremely late arrivals of 2-4 am) He is hard headed enough to find a place to stay, thinking he would be "punishing" us. I haven't paid for the spring college semester, even though the tuition is now due.