The KTEA-II age norms begin at 4-6, so they could only give her grade equivalents.
GEs are a statistically-derived measure that indicate that she got the same score on this test that the average 1.5 grader got on it. It does not mean that she necessarily can be instructed in math at a mid-first grade level.
Those are impressive scores for a just-turned-four-year-old. Even so, I would be cautious about basing any placement decisions that are a few years away on what is essentially a screening assessment. The KBIT is only a cognitive screener, not a comprehensive instrument, and these KTEA-II scores are not solidly norm-referenced, as they are out-of-level. Not to mention, preschool scores are notoriously unstable. I would wait until this decision is closer, and then re-examine her classroom performance, social-emotional development, updated comprehensive psychoed assessment, etc. to make a holistic decision at the time.
