That was the episode of the Coach in the Classroom Podcast where Martin Richards described the core skill, 'Ethics and Standards' as defined by the International Coach Federation. For further coach training, we recommend contacting an accredited coach training company.
Coaching should be carried out ethically and according to the agreed standards. The ICF, the International Coach Federation, has developed an international, industry-wide definition of those standards. This podcasts briefly describes that those ethical standards are.