Ind. Code § 6-1.1-35.5-5

Sec. 5. A county or township assessor, a member or hearing officer of the county property tax assessment board of appeals, or a member of the public may apply for and take the level one examination. A person who is successful on the level one examination may apply for and take the level two examination. A person who is successful on the level two examination may apply for level three certification upon completion of the requirements specified in section 4.5 of this chapter.