Here is an explanation of standardised scoreshttp://www.elevenplusexams.co.uk/advice ... xplanation
The two different tests would be handled separately. In simple terms your DC's score are only compared with children all born in the same month - so a bell shaped curve would exist for each month, standardised do that x% achieve a qualifying score. If, for example, all June born children scored very high marks on NVR, the pass mark for NVR would be high. If the same group of children scored poorly on VR the pass mark would be low. It would be interesting to know about standardisation if a remark changes the score - I've never heard of a remark changing a score before. I only know the basics of standardisation don't know. I assume that one more mark for one child would make no difference at all overall as the numbers are so large.