Candidates should know Blender's history, how it became open source, and what being open source means to Blender's development and documentation. With a portfolio/reel submission consisting of stills, animations, and/or .blend files, candidates should exhibit proficiency in 7 of these core areas (Source)
Proficiency is demonstrated in a submitted portfolio for the "Blender Foundation Certified Trainer" (BFCT) (Link) .
It's not clear how first portion of knowing "Blender's history, how it became open source, and what being open source means to Blender's development and documentation" is assessed. Evidence of teaching skill submitted via one written example and one video example.
Review is by a committee thus how this material is reviewed is unknown.
Also requested is proof of teaching experience being teaching, training, or "community experience"
includes forum assistance on blender forums, IRC support, community workshops, or updates to the Blender documentation wiki