Final answer:
The sentence "Hay muchos estudiantes en la escuela." is grammatically correct in Spanish.
Step-by-step explanation:
The sentence "Hay muchos estudiantes en la escuela." is grammatically correct.
In Spanish, the subject (hay) is followed by the verb (muchos estudiantes en la escuela). The sentence structure follows the pattern of subject-verb-object.
In this sentence, the subject is "hay", which means "there is/are". The verb is "muchos estudiantes en la escuela", which means "many students in the school". So the sentence translates to "There are many students in the school."
Learn more about Spanish sentence grammar