I got my certificate in structural behaviour after passing the structural behaviour exam issued by The Institution of Structural Engineers. This certificate is an internationally recognised mark of competence that proves you have the skills valued by employers: fundamental knowledge and understanding of structural behaviour, including trusses, beams, plasticity, and dynamics.
Many thanks to David Brohn MBE PhD CEng FIStructE , Mark Moppett and The Structural Exam for helping me explore the importance of this skill.