noun
rate of advancement to higher education
Typically refers to the percentage of students who proceed from one educational level to the next, such as from high school to university.
この県の大学進学率は全国平均より高い。
The university advancement rate in this prefecture is higher than the national average.
進学 means 'advancing to the next stage of education', while 進学率 specifically refers to the rate or percentage of such advancement.
Compound of 進学 (advancement to higher education) and 率 (rate).