Thanks, Glad that it helped you. Yes candidates are evaluated continuously by instructors. Aspects are discipline, daily exercises, trainings exercises, team spirit, leadership qualities, resilience, trekking, written exam, and most importantly on your helpfulness to other trainees. I am not very sure about the weightage of these but this what they tell. To get 'A' grade, one should be able to complete the whole course with average performance and personal traits like helpfulness (may also help you with some awards given in the end of ceremony). In mountains it is also helpful to other teammates if you don't need help. :) Key thing is that mountaineering is not exactly a race. This is most suitable place where a turtle wins the race :). But don't be too slow. You'll be noticed and this slows all your teammates too. It is good to walk along with your team members and help them. I myself was not very good at daily running exercises but I was little better in long trekking.
When there is race or competition, you will be notified so; as it is with a small marathon or artificial wall climbing in the end of course.
Wish you best of luck. Let me know if I can help you more.