Some of my students are only approaching expectations yet their percentiles are high. For example, one student is only labeled as approaching expectations but scored 79th percentile for phonics. That would make sense for a benchmark but not for a percentile. You either need to make adjustments to your categories or explain in a video the reasoning. The only mathematical logic I can think of is if the entire nation's norms are just that skewed due to low literacy skills.

These numbers and results are important for making decisions and talking about risk with parents.