Navy blue scrubs. Students need to be at least 16 years old, must be able to read English, write, add and subtract. Must pass a state wide criminal back ground check. And, they must have no physical limitations that can prevent them from performing as a certified nursing assistant. PLEASE NOTE: the cost of the State testing fee, TB and Physical Examination are included under Misc. cost listed below. Admission fee is part of registration process and administrative duties. Lab fees are part of the extensive review and preparation for the ISDH written and skills competence exam.