People seem to have different ideas of how to decide what age band a child is working at. Sometime it's more straight cut then others. For instance I have a child who is nearly 39mths who fits all of the 22-36 mth profile for understanding but only one or two sentences in the next age band 30-50mths. My colleague said to put him in the 30-50mths age band as he is secure in the 22-36mth if he is doing all of it and emerging in the 30-50mth is that right???