Extra stuff

 'An American monkey, after getting drunk on brandy would never touch it again, and thus is much wiser than most men' Charles Darwin
 

So you are aiming for a merit or excellence endorsement for Biology? Then you need to do at least one external examination. Over the course of the year you have actually covered the main content for a number of externals, so you have some element of choice.

Standards

Early preparation is the key to getting that stuff into your head for external exams