Questions about University of Washington Greek life?

I’m a junior in Highschool and have recently begun looking at the pros and cons of joining a fraternity in college. I’d like to be as involved as possible during my college years so I feel as though this would be a good match for me. I was a bit confused on the whole “rushing” process at UW, some clarification would be greatly appreciated. I heard the process of rushing happens as early as April before the fall quarter starts, can anyone confirm that? Also if you were involved in the Greek system how did you like it?