Tech Training has lost all credibility
Once class-based 'practical training' was replaced by multiple-choice-tests, training-centers started to just email out the answers in advance from anonymous email accounts etc.
That's how so many training businesses were able to boast a 90% pass-rate. Talk about fraud. Its the biggest open-secret in what is largely a 'dirty' industry. Even the Reg was researching scandals in this area in the LP days.
Thankfully in Game-Dev certification is pretty much shunned. So its portfolio work or nothing. Therefore outright cheating / fraud is rare!