Hello ! Maybe you can help, I wrote several times to the mail indicated here Certified Training | Steinberg to know how to become a certified teacher for cubase, but got no answers (I first wrote in August, then october and just did it again…)
Do you have any advice on this ? how a teacher can get the certification ? I’m in France… thanks in advance !
Cheers 
Daniel
Maybe @Martin.Jirsak can help you out. He is a certified trainer if I recall correctly from a post I once read.
Hello thanks !! they just answered:
Dear Daniel,
Thank you very much for your interest in joining the Steinberg Training Center/Steinberg Certified Trainers Program.
For now, we have suspended the admission of new members and are considering a revision of the program. We will get back to you once we are ready to go.
Your understanding is greatly appreciated.
Best regards,
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Thanks for sharing 
I hope they will offer a program in the near future that suits your interests. Please keep the forum in the loop!
Software teaching may be one of those things that gets totally hammered by AI rather sooner than later.
And forums like this, too.