We are in a grammar school area and whilst we'd like DS to go to one of the grammar schools, more importantly, he does too which you would think would be the perfect motivator, but frankly he just can't be arsed with it all. He bright but not exceptional (mix of top & middle sets) so definitely not up for the super-selectives but from what I can gather, would fit very well into one school (good solid all- rounder, sporty etc). We've avoid big pressure but at his request he started weekly tutoring this year and does the bare minimum, rushes through making silly mistakes from not reading questions properly and at this rate isn't likely to pass. But he won't be told & as far as he's concerned it's a given he'll pass and go to his chosen school - he has wonderful self-belief but not helpful in this instance 
How can we motivate him to knuckle down and put the effort in (even if just for the next 6 months) as I know he'll be gutted when results come out.