A more thorough explanation:

School is an institution where students go to learn and receive an education. It is usually for children, but can also be for adults. There are different types of schools, such as:

• Public school: A school that is established by the state and funded by public taxes. It is open to all children in the district where the school is located.
• Private school: A school that is maintained by private individuals, religious organizations, or corporations. It is funded by fees or tuition and is open only to pupils selected and admitted based on religious affiliations or other particular qualifications.
• Common school: Another term for public school.
• District school: A public school that is contained in and maintained by a school district.

The word "school" can also refer to the collective body of students under instruction in an institution of learning, or a group of people adhering to the same philosophy or system of beliefs.

• John attends a public school in his district.
• Mary's parents decided to send her to a private school because they wanted her to receive a religious education.
• The school board decided to close down the district school due to budget cuts.
• The school of thought that emphasizes individualism is called libertarianism.

These examples illustrate the different types of schools and how the word "school" can also refer to a group of people with a shared belief system.