BTEC in IT here.
Theres 3 qualifiactions you get.
Years completed (and passed)
1) BTEC National Award
2) BTEC National Certificate
3) BTEC National Diploma
You cant fail year one and blag onto year 2 like you can a university degree as the first year is a recognised award in itself.
The course has 4 gradings
Fail
Pass
Merit
Distinction
He needs to at least get a pass for all modules to pass the relevant course, then any marks are averaged to give a final overall grade (so 2 passes and 3 merits should results in an overall merit).
If hes looking to get into university, he should only need to do the first 2 years to get enough UCAS points to apply for a uni course, although most unis will ask for a minimum of a merit to gain entry. I got onto a computer science degree with a distinction BTEC National Certificate in IT, an ECDL certificate and a CLAIT stage 2 certificate.
My son is quite happy to sit in his room and play on his xbox 5 days week and work 8hrs at the weekend. Hes 19yrs old ! Oh and maths was one of the units/assignments he had outstanding in the last week. Just to put it into perspective, he was still doing assignment 1 in the last week
Without trying to sound offensive, his gaming habits mean sweet stuff all while at college, its university when you really need to pack in with the fun side of life. I used to easily do 6 hours of gaming a day while I was on my BTEC, and I still came out with 10 distictions and 2 merits (and I was doing CLAIT and ECDL courses while doing the BTEC). Its a matter of determination and pride more than anything, if he wants to do well then he can do so.
A simple motto to live by is 'never say never' (ive youve seen American Tale you may recognise it). A good mate of mine went through school with me, went through sixth form with me and through college with me, then went to university, at which point he would look at an assignment and say 'I know i cant do it so im not going to bother wasting my time'. Needless to say, he failed year 2 then dropped out when he attempted his second year for the second time. Its not that he was a stipid bloke, he came out of college with a distinction as I did, but he didnt have the determination to want to solve a problem and gave up too easily.