What is his error rate when reading 276 wpm? The education dogma I encounter is that a kid reading that fast must be making a significant number of errors. I encounter wide eyes when my DD reads that fast with 100% accuracy.

If the error rate is low (<2% or so), then you need to ask what his intervention goal is that he's working on with this program and how this program will meet the goal. I'd then follow up with asking how will you know he's met the goal (measurable goals and all that).