I believe the KBIT is a very short screener test, but the K-TEA is a full-on achievement test. I'd ask for them to give the K-ABC test, since they are using the Kaufman tests. The K-ABC is the full-length IQ test.

It's very possible he just connected better with the Gifted Teacher, or that she has much more experience working with gifted kids and was able to get and keep his full attention for the test.

~amy