Is 100 IQ good for a 16 year old?

Age is already "calculated into" an IQ. The average IQ is, by definition, 100. Incidentally, never take the result of one single, isolated test seriously. Even keen enthusiasts of intelligence testing usually admit that at least to some extent those things measure your ability to take the tests and not "intelligence" as such.

Answer Perhaps it goes without saying, but 96 is an average IQ score. It is very close to 100, which is the exact average.