"rather than losing mainly students from disadvantaged backgrounds or with lackluster records, the attrition rate can be higher at the most selective schools"

"rather than losing mainly students from disadvantaged backgrounds or with lackluster records, the attrition rate can be higher at the most selective schools" I wonder if this is a visible effect of the fact that the most "prestigious" schools typically hire faculty solely on their research record and care not one whit about how good or interested they are at teaching...