How to Say "cram school" in Spanish
The Spanish word for “cram school” is “pre” — B1 level.

Examples
Ella estudia todo el día en la pre.
She studies all day at the prep school.
Si quieres entrar a la universidad, debes inscribirte en una buena pre.
If you want to get into university, you should enroll in a good prep course.
Muchos jóvenes hacen nuevos amigos durante el ciclo de la pre.
Many young people make new friends during the prep school term.
The 'Hidden' Word
Even though it's just three letters, it is feminine ('la pre') because it is a shortcut for 'la academia preuniversitaria'.
Shortened Names
Spanish speakers love to shorten long words. This is called 'apocope,' but you can just think of it as a nickname for a school.
Don't use it for 'before'
Mistake: “Voy a comer pre de salir.”
Correction: Voy a comer antes de salir. Use 'antes' to mean 'before' as an action. 'Pre' as a standalone word is almost always a noun referring to a school or party.
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