1) Educatee 2) Nonachiever 3) Pupil 4) Student 5) Underperformer 1) No hoper 2) Non achiever 3) Underperformer 
An underachiever is a person and especially a student who fails to achieve his or her potential or does not do as well as expected{by whom?|date=November 2012}. Of particular interest is academic underachievement. Studies of individuals who have not realised their apparent potential have identified learning disabilities, ADHD, and many other educa...
One who manifests underachievement. ... (05 Mar 2000) ... 
Type: Term Pronunciation: ŭn′dĕr-ă-chēv′ĕr Definitions: 1. One who manifests underachievement.
[n] - a student who does not perform as well as expected or as well as the IQ indicates
underperformer noun a student who does not perform as well as expected or as well as the IQ indicates
a student who performs less well in school than would be expected on the basis of abilities indicated by intelligence and aptitude tests, etc. · a person or thing that performs below expectations.