literacy rate
The percentage of people in a given population who can read and write. Often used in educational and developmental contexts.
The literacy rate in this country exceeds 90 percent.
Improving the literacy rate is essential for economic development.
Compound of 識字 (しきじ, 'literacy') and 率 (りつ, 'rate'). 識字 itself is from 識 (しき, 'discern, know') and 字 (じ, 'character').