Reform School
Another word for an institution for learning is a school.
The root words of "preschool" are "pre" meaning before and "school" referring to an educational institution.
churchAnother answer: Parochial
No, "school" is not a prefix. A prefix is a word part added at the beginning of a root word to create a new meaning. "School" is a root word itself, meaning an institution for education.
The Greek root word that means an institution designed for learning is "schole," which is the root of words like school and scholastic.
Yes, the word "school" is a common noun because it refers to a general type of institution where education is provided.
learning
Yes, in the title "Homer High School," the word "School" should be capitalized because it is part of the official name of the institution.
The word school is singular, one school. The plural form is schools, two schools or many schools.
penal
Truant
I assume the learning institution, in which case it is "escola", if you instead meant a group of fish it is "cardume".