It's a good learning about facing an interview. However, I would like to suggest to add about expressing about the bad experiences too but, in polite manner without disgracing self as well as the company or companies.
This is because, people today leave their jobs due different frustrations and bad environments. Those candidates could be brilliant capacities at work and with good qualities. So, there should be ways for them to express them selves when they are asked 'why did you leave previous place?".
All experiences may not be positive all the time. It is always a mix. So, appreciate if you all could enlighten your learners more about those facts too.