Those are amazing scores

The way I understand it, achievement testing gives you an idea of how your child's academic knowledge and performance compare with other children their age.
The results show that your DD performs at a higher level than 99.9% of children her age in reading, math and writing.
One would expect that a child who is able to perform at this level would also have a high IQ, but these are not equivalent to IQ scores. IQ testing is designed to measure different aspects of cognitive functioning.
Are you planning to apply for the DYS program? I believe those would be qualifying scores for the achievement testing part of the requirements.