sus notas

his/her/their grades

→ su
phrase Rare #50,690
his/her/their grades In these examples, notas refers to academic grades or marks.
SP: Sus notas mejoraron mucho este semestre.
EN: Their grades improved a lot this semester.

Está bien, sus notas han salido.

It's fine; your grades are out.

Sus notas dieron un gran salto.

His grades took a big leap.

Antes me enviaba sus notas de la universidad.

He used to send me his university notes.

— Los excéntricos Tenenbaums (2001)

¿Estaba Tom preocupado por sus notas?

Was Tom worried about his grades?

No por sus notas, sino por su orgullo.

Not because of his grades, but because of his pride.

— Burning (2018)