I am teaching IB Higher and Standard level for the first time. We have done some of the standard portfolio tasks; in SL, we have done China Population and Stellar Numbers. In Higher, we did the building task and linear equations. I think I understand the marking criteria. However, I am a bit unsure about what is needed for moderation. According to the blurb, I must complete form 5/IA, and send 5/PFCS for each portfolio, signed by me and the student. I have these - so far so good. However, then I need a "solution key" per task. Is this a complete solution, or a summary, or a key showing how I have allocated marks? If the latter, I can make an attempt at it, but have no way of knowing if it is correct. And is there anything else I need to do? Thanks in anticipation.