Interesting topic- my DS8 is similar. His scores bounce around and we have found that when it comes to "AR" reading, it's really about encouraging independent reading and taking comprehension tests. At his school, it's more of a reward program than the actual reading curriculum. I suspect that some gifted children have a knack at multiple choice assessments- and that is how the STAR assessments work. I was talking with my son's new teacher to work out some math modifications for the year and she wanted to know about reading modifications based on high STAR assessments. I think it's a useful tool when used as part of advocacy. Data that backs up requests for modification or helps teachers get a snap shot of how your child might differ from a more typical student is helpful. But I would love to see some data on Accelerated Math and Accelerated Reader and it's efficacy in assessment of highly gifted students.