How to Say "secondary school" in Spanish
The most common Spanish word for “secondary school” is “instituto” — use 'instituto' as the general and most common term for secondary school, covering middle and high school grades, especially in Spain.
instituto
een-stee-TOO-tohinstiˈtuto

Examples
Mi hijo mayor terminó el instituto el año pasado.
My oldest son finished high school last year.
Hay un instituto nuevo en las afueras de la ciudad.
There is a new secondary school on the outskirts of the city.
Masculine Noun
Since 'instituto' ends in -o, it is a masculine word. Always use the masculine articles (el, un) and masculine adjectives with it.
secundaria
seh-koon-DAH-reeahse.kunˈda.rja

Examples
¿En qué año de la secundaria estás?
What year of secondary school are you in?
Terminé la secundaria el año pasado y ahora voy a la universidad.
I finished secondary school last year and now I'm going to university.
Mi hermana es profesora de matemáticas en una secundaria pública.
My sister is a math teacher at a public high school.
Use with Articles
Since 'secundaria' is a feminine noun, you will almost always use the feminine article 'la' or 'una' before it: 'la secundaria' (the high school).
Confusing Levels
Mistake: “Using 'colegio' when you mean 'secundaria'.”
Correction: In many Spanish-speaking countries, 'colegio' often means 'private school' or 'primary/elementary school,' while 'secundaria' refers specifically to the high school level.
gimnasio
him-NAH-syohimˈnasjo

Examples
El antiguo gimnasio de la universidad se convirtió en un salón de eventos.
The university's old gymnasium (sports hall) was converted into an event hall.
En ese país, un 'Gymnasium' es una escuela que prepara a los estudiantes para la universidad.
In that country, a 'Gymnasium' is a school that prepares students for university.
Context Clues
If you are reading something formal or historical, 'gimnasio' might refer to a large sports hall or even a type of school, not just the modern fitness center.
General vs. Specific Usage
Related Translations
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