[LunaSea]

> It is not obvious how to find a better way to filter.

An open exam process where anyone can take the test and receive a diploma for each individual class.

A bit like how professional certifications work.

That way, no matter the way you acquired your skills, you can try and get the same diploma.

Of course, you would also need to revise what skills and topics are tested to also provide exams for more practical topics usually ignored in colleges.