rate of advancement to the next educational level

wide, broad (especially more so than normal) / large scale, drastic, major, substantial

a specific measure used for traditional Japanese textiles: full-breadth cloth, roughly 72 cm wide, twice the width of a 小幅 (kohaba) measure

to surpass

the whole country; the entire nation / nationwide; countrywide / (chiefly) all of Japan

average, mean / balance, uniformity / balance (having equal weight on all sides)

go on to the next level of school

entering the next level of school, often university

area, district, particular geographic region

rate, ratio