HCH may refer to: Hampton Court House, an independent school in Surrey, UK. Hexachlorocyclohexane, a group of chemical compounds. Holmes Chapel railway station (National Rail station code), in Cheshire, England.
The PDI focus is on education and training, with more than 20 hours of educational sessions and speakers, and the ability to earn up to 21 Continuing Professional Education (CPE) units. These sessions meet the National Association of State Boards of Accounting standards.
To be eligible to take the CDAÂ® exam, applicants must hold a current CPR certification and meet one of the following qualifications: 1  have graduated from an accredited dental assisting/dental hygiene program, 2  have a high school diploma, or equivalent, and a minimum of 3,500 hours of approved work experience, OR.