Outstanding – Exceptional; inspiring; expertly delivered; technically faultless.
Excellent – Highly educational; professional delivery; maybe very minor technical faults.
Very Good – Educational; accomplished delivery; minor acceptable technical faults.
Good – Some aspects of educational value; acceptable delivery; minor technical faults.
Satisfactory – Content not stimulating; uninspiring delivery; notable technical faults to remedy.
Poor – Little or no educational value; significant technical faults