RTI should be working to move him from his current level upward. A true RTI is only meant for at risk kids in specific areas. For kids at or above grade level it should be for enrichment or working to maintain at present levels. Students should not be consistantly working on skills already mastered It is mostly intended to serve kids who are lacking in skill areas and not performing to grade level benchmarks. It sounds like they have just grouped the higher performing kids and are not assessing their individual needs( as they do for low performing students) and then measuring progress. I would go to the conference and ask to see the assessments done in the RTI group and then the updated assessment showing growth. I would ask why he is in an RTI group to begin with and what is the philosophy they are following.
This will not make you more like but will put them on notice that you are aware of RTI expectations. You may even want to contact the parents who may also be raising issues. This could be an opportunity for small group or individual projects.
