Question

ayer el estudiante (salía / salió) de la clase tres veces.

Explanation:

The sentence "Ayer el estudiante (salía / salió) de la clase tres veces" is about choosing the correct Spanish verb form. "Ayer" (yesterday) indicates a completed action in the past, so the preterite tense "salió" is appropriate. "Salía" is imperfect tense, used for ongoing or habitual past actions, which doesn't fit here as the action of leaving three times yesterday is a series of completed actions.

Answer:

salió