I'm at the end of my tether with my 15 year old son. His GCSEs start in May. He did his mocks were in Jan, he did a very minimal amount of revision, hence results were so-so. All his teachers say he could get As if he put in a bit more effort. He says he wants to do A levels, with a view to going to Uni, to study Economics. Yet despite having this goal, he refuses to revise, is argumentative and aggressive when I try to talk to him about it. He shouts and swears, says I obviously think he's a loser and a failure so what's the point etc. I just want him to spend less time gaming, do a bit of study and get some decent results! I'm at a loss, any ideas as to how to encourage him and avoid the constant arguments?