i went to NLC, and grounding was an important topic. we had academic training/ education on the different grounding methods and also an actual demonstration showing the differences in current flow through a worker while using bracket grounding and EPZ grounding.
installing grounds in the field was also part of the training...it was a competency that was practiced over a dozen times and to pass you had to install epz grounds in 6 or 8 minutes while following rules, MAD, climbing techniques, etc...