Poll

[Adam]

Colorado does, through the association.

[Zoochy]

Missouri State has a Part I test for officials within the first 3 years as well as a Part II test for ALL officials. So officials within 3 years have to take 2 tests.
The Part II test is now an online test. If you get less than a 70% you can immediately retake the test.
If you are an IAABO member you also have to take an IAABO test. This is an open book/take home test.

[derwil]

Alabama - Yearly on-line exam. Open book, 50 questions, 80% to pass.

[bainsey]

Annual closed-book exam in Maine.

[Freddy]

Michigan -- 30 question multiple choice test (always a good one!) with passing grade mandatory to be considered for post-season state tourney.
Our association finds ways for all officials to take it as part of local association activity.

[Scuba_ref]

The WOA requires a 70% on its annual 50 question online test - some true/false and some multiple choice.

Passing the test puts you in the Certified Official club and you are then eligible to officiate HS games. Also, the number of Certified Officials is used in the State Allocation Calculation to determine playoff spots.

[Loudwhistle2]

Alaska
Annual test, must pass with an 80% or better.