i know a few guys who where apprentices for a 1 man band doning only domestic stuff a house rewire being the biggest, both adults (22+27) they went to college and worked like dogs for the guy he took tax off them for 4 years only for them to try get a tax return after discovering there is such a thing ..ooops never has a penny been paid in thier names , anyway they currently still havnt passed as the guy has never done any testing the boss used to walk in with a multi meter and then supply a cert to the customer yes they did think a multi meter could be used , makes u wonder what the real standards is out there