If you are an experienced freediver but don't have a formal certification, or are certified with an agency other than AIDA and would like to level up, you can take an AIDA Crossover Certification exam.
A Crossover Certification exam tests you on all the requirements for a given AIDA certification level, and certifies you at that level if you pass.
A Crossover Certification exam is not a class. A Fins and Foam instructor will supervise you while you perform the challenges and grade each challenge as pass or fail. You must perform the challenges in order and you get one attempt at each challenge.
For the complete list of AIDA certification challenges, see here
The cost of a Crossover Certification exam is $50