straight-A
She took straight As at A-level and has matured into a socially aware and independent young woman.
He was at the head of the class with straight As, including two A-pluses.
He earned Cs and Ds in his freshman year but improved to mostly As in his junior year and straight As as a senior.

SMART Vocabulary: related words and phrases

Marks & results
2:1
2:2
B, b
C, c
class
continuous assessment
formatively
GPA
grade boundary
grade-point average
honor student
pass
passing grade
positive
positivity
S, s
second class
straight-A
summative
third