The Occupational Competency Examinations are designed for those experienced in skilled trades or occupations who need to present objective evidence of their competency to become vocational teachers, to secure teacher certification or to obtain academic credit from a higher institution. The OCE Cosmetology Passbook® prepares you with hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: hair and scalp care; skin care; nail care; and more.