Pettiness in the work place

Some people just can't get past high school and have to treat the work place like a gossiping school hall or say childish remarks like, "don't talk to her." I hated high school and wish I didn't have to deal with such petty crap at work. I left high school over 15 years and wish I can leave the clickish life behind. I try to get away from it, but it still manages to find me and try to attack me when I have nothing to do with that garbage. Everywhere I go I can't get away from that clicky social life style. One of the reasons why I dont have any close friends anymore. Because this world is one big giant high school and I'd rather not get involved with that.