Hooded isn't a marking associated with high white, which isn't to say a hooded rat can't have high white it just isn't a high risk marking. You bring up a good point though, exactly what "high white" means is kind of confusing. Take the hooded rat for example, the white color does go pretty high on the sides of the rat, so why not? Another way I've seen it explained is white where there normally wouldn't be white. Again, why not the hooded rat? So it's definitely understandable that there's confusion on it.I believe hooded rats are high white rats...not sure though.