학벌이 · 학벌을
academic pedigree (prestige of one's school); academic elitism
Example
한국 사회에서는 아직도 학벌을 중요하게 여겨요.
Korean society still places a lot of weight on which school you went to.
Word parts
학 learn+벌 clique
Literally 'school clique'.
Good to know
학력 is how far you studied; 학벌 is how prestigious your school was.