What part of speech is “school”

a school is a noun that means a place where children and young people are educated. It usually covers primary and secondary education, but can involve all stages of education, from pre-school to higher education. Generally, a school is a public or private institution that provides instruction and learning for its students. Schools can be organized around a variety of educational approaches, including religious instruction, independent learning, or a combination thereof.

1. I attended the best school in town growing up.

2. I'm excited to start school in a couple of months.

3. She's in medical school now, which requires a lot of hard work.

when used to refer to a group of people, school should always be followed by the word 'of.' Also, note that the word often takes an article in front of it when used as a noun. For example, 'I want to go to the school' or 'The school was very well-attended.'