un·der·a·chieve·ment
noun/ˌʌndərəˈtʃiːvmənt/
/ˌʌndərəˈtʃiːvmənt/
[uncountable]- the fact of doing less well than you could do, especially in school work
（尤指学习上）未发挥水平，未展现实力 - educational/academic underachievement
教育/学术成绩不佳
- educational/academic underachievement