id	keyword
epaa-688	variable
epaa-688	grade
epaa-688	expenditures
epaa-688	achievement
epaa-688	districts
epaa-688	hanushek
epaa-688	studies
epaa-688	school
epaa-688	production
epaa-688	education
epaa-688	relationship
epaa-688	performance
epaa-688	student
epaa-688	input
epaa-688	correlation