It has been said that one of the single best and simplest things a student can do to immediately improve their exam results for almost all subjects is to read regularly. Young people today are going to need to read and write more than they have in any point in human history. Whether this is for finding and keeping a job, searching for information or socialising with friendship groups, the ability to read and write well has never been more crucial.
Research published in the Oxford Review of Education shows that having a high academic self confidence can increase GCSE results by up to 6 grades. What's more is that these grade inflations are not limited to those with high prior attainments - it would seem that anyone can benefit to some degree or other.