I'm with DeeDee; it's never felt important to know what DS's reading level was, because he was an early self-taught reader and it was readily apparent that nobody was ever going to have to teach him to read. (I did find it interesting to see what level book in a reading scheme he could easily read, when he was very young, but this was just out of curiosity.) What he read was always determined by his interests, not by his reading level, and he never seemed to be vulnerable to getting frustrated by things being too hard. If school had attempted to stop him reading things above a certain level because they'd refused to assess him above that level, of course it would have been a different matter, but they never showed any sign of doing any such thing.
