Proposals to forgive student debt have been criticized for disproportionately benefiting high-income families.
A new study aims to identify broader measures of student achievement in public high schools with historically underserved students.
Warren's plan would cancel most outstanding student debt held by households making up to $250,000.
All proposals miss a critical factor: the amount repaid should depend on the amount borrowed.
New efforts at collecting school-level data could eventually give researchers a more universal measurement of school funding progressivity.
Women make up a growing share of the college-educated population but are still paid less than men for similar work.