Final answer:
The retention period for certificates of completion from continuing education courses is typically four to six years, but this can vary by field and jurisdiction. Professionals should verify the exact requirements with their regulatory body.
Step-by-step explanation:
The duration for which attendees of courses of continuing education must retain their certificates of completion in their files varies by jurisdiction and the specific field of study or industry. However, a common standard for many professions is to maintain these certificates for a period of four to six years. This allows for the verification of earned continuing education credits within the most recent certification or licensing period. It is crucial for professionals to check with their specific regulatory body or professional association to know the exact requirements regarding the retention period of these certificates.