not sure if you are talking about bpec course or not, dont suppose it matters TBH, i work in a centre in Paisley which does this course, so it is fair to say my opinion is based on that, however, there have been many many people passed thro the course with a great level of commitment and hard work who are reaping the benefits and working full time and earning, a lot depends on your commitment, effort, skill and ability, depending on your background 28 weeks is tons of time to do the basics and get your head sorted on all the safety stuff, and i always suggest that the best insight into it is servicing so you learn the basics, then do fault finding, THEN you go out and learn fault finding and earn experience, (just as the rest of us did no matter where we learned) many will comment it is wrong and you need to do a 3-4 yr apprenticeship to do gas which i dont agree with depending where you have already worked and what you know, ie commitment, looking after and respecting peoples property, getting out your bed every day and going to work, not seeing how long it takes to melt something with a blow lamp, all these thing s we do as apprentices and dont need to be taught them again