420? What is 420 college? Why is it so much important now a days? There are several colleges in California and in several states in where they teach necessary thing related with marijuana or cannabis or weed. Maximum colleges or almost all colleges there are non profitable. If you get admission in this 420 college, they will provide you all teaching of marijuana. You will have all marijuana related course there. They will provide you full support that you need. Getting admission in these colleges is not so tough. They will teach you how to grow weed, where to grow weed, what is the processes of growing weed. They will help you to get license to make a shop or to grow weed. You will have support from there about everything related to weed.