I personally think it is to easy to become an official, and I do a little umpiring of softball, its the same stuff, you take an open book test, but does this mean you know the rules or does this mean you are reading the rules and seeing how they compare to the questions.
That doesnt mean you know where you should be at all times.
Another thing, if you get certified to officiate high school it only cost $5 more to get certified for kids as well.