I just got an email about the coach cleaner job and I have to take a test on May 19. I am concerned because I have weed in my system. It only really stays for about 30 to 40 days. After you take the test when do they call you back because I wanna be sure its out of my system. Are you also able to study for this. Do they do a urine test & hair test or just urine? What is on this coach cleaner exam ?