Hi I'm new here, and just wondering with issues of LD, does anyone know what the rarity of a 16 point subtest scatter is? My son received three 19s on the WISC IV and has a GAI of 99.9%. But he also received a 3 in coding. How many children out of 1000 have such a spread? I'd like to know because I'm about to start advocating at my son's school. I'm told lots of children are gifted/ld. But this extreme?