Think that is normally a separate unit but is normally covered (may be an optional unit) on level 3 I believe - good luck!
Electrolysis is usually taught as part of level 3,however different colleges teach different units,for example we were NOT taught enhancements as part of our level 3,yet I know of some that have had that included.
Level 3 for me consisted of facial/body electrical treatments,understanding electricity i.e galvanic/faradic,spa treatments,i.e sauna,spa(understanding the chemicals that need to be added and what they do)management,fitness and nutrition I.e devising a diet plan for several individuals,some with special needs,and devising an exercise plan,electrolysis was also included.
I doubt you will cover electrolysis though given that you will only be doing 3 hours,twice a week.I dont think they would have time to cover that unit,which is unfortunate but you could train in this at a later date so it's not a problem.
I'm only guessing though,and as I said all colleges are different though you will definately cover electrical treatments for face and body as this is a routine part of Level 3 and what any salon owner would expect froma level 3 qualified therapist.HTH