Alex, that used to be correct until a few years ago, when KSHSAA registration was added as a requirement. Here is the excerpt from the Kids' Bylaws:

To be a Kansas Kids registered official:

• 1. Return registration form with a check for $5.00.
• 2. Must be a high school registered official.
• 3. An official referee uniform is mandatory during all competition.
• 4. Failure to honor a written contract to officiate will be grounds to have Kansas Kids certification revoked.
• 5. Must have officiated at least one kids tournament to be considered for the Kids State Tournament.