Well, my beef with the CogAT is that it weeds out 2e kids who really do need special services. DD has dyslexia, and tanked the CogAT. On WISC-IV she scored VCI=140. Other indices were lower due to the LD, and FSIQ=126 (although psychologist said that it was invalid to calculate the FSIQ with such a wide spread.)

ETA ( wink ) Our district uses CogAT as their GATE-keeper. No outside testing accepted. Each kid is allowed only one try at the test.