This is the 872nd most frequent Catalan word.
revisar
To review or check.
In this sentence, 'revisar' is used to mean 'review' in the context of going through notes as a form of preparation.
He de revisar els meus apunts abans de l'examen.
I need to review my notes before the exam.
Here, 'revisar' implies assessing or grading written work.
La professora revisarà les nostres redaccions aquesta tarda.
The teacher will grade our essays this afternoon.
In this usage, 'revisar' refers to 'check' or inspect' something for issues.