Can I skip the ethereum dev course and take the certification exam directly?

Hi,
I have learned to develop dapps via other ways than here and am now looking for a good certification.
The one from you guys (blockgeeks) is a very trustworthy one and I think that having it would open up career opportunities for me.
Therefore I wanted to ask if I can take the exam without the course or, alternatively, can I enrol in the course and take the exam immediately?
Kind regards,
Bloctite.