If you are talking about a middle school tournament (one hosted by a KSHSAA school), then the official has to be certified by the state (KSHSAA)...Basically, all they have to do is pay the yearly fee and pass the test (open book 90%)...
Just passing the test doesn't really keep them from not working...All the 90% is for is that is the minimum you have to have to do post-season tournament (at the high school level)...The schools and/or league are in charge of scheduling officials and they know who has passed and who didn't...