Columbia Gorge Community College 8 week Cannabis training course and Certificate. Set yourself a part from the rest in the fastest growing industry in America. Study at your own pace. You'll have three areas to choose from, manufacturing, retail and cultivation. Gain the knowledge to advance your career in the Cannabis industry. Columbia Gorge Community College is partnering with Green Flower, the industry leader in cannabis education. Columbia Gorge Community College 400 E. Scenic Drive in The Dalles and on the heights in Hood River.