I see that you've posted elsewhere that your child scored a 141 on the RIAS. That should be plenty high enough to gain access to any gifted services available in your school district.
Whether the RIAS is accepted by the school district is, of course, up to them. If they have a formal process for identifying and serving the needs of the gifted, it's quite likely they use the RIAS themselves. Because it can be given in a relatively short time, the schools need fewer staff to administer it to the largest number of students.
It generally tracks well with the IQ numbers from other tests, with the following noted trends:
- Mean scores tend to be slightly higher than other tests.
- Scores in the gifted cohort can be underestimated due to low discontinue thresholds.