I'm currently developing assessment at ks3 in my department. Clearly we've all been using the level descriptors for years, but what do you think of them? Vague and ambiguous or do they provide scope for creativity and teacher autonomy? How do you apply them in school? Do interpret them for pupils and if so do you do this for each project individually or do you have one set of descriptors which you use across the board at key stage 3?