Final answer:
The noun "Abbott Middle School" is a proper noun, as it refers to a unique, specific school and is always capitalized.
Step-by-step explanation:
"Abbott Middle School" is categorized as a proper noun, signifying its distinction as a specific and unique entity. Proper nouns, distinguished by their capitalization, refer to particular names of individuals, places, organizations, or, in this case, educational institutions.
Unlike common nouns that represent general categories, such as "school" or "city," proper nouns pinpoint a singular and specific entity, offering a unique identity.
"Abbott Middle School" denotes not just any middle school but a particular institution with its own characteristics and attributes.
Through capitalization, it stands out as a distinct proper noun, emphasizing its individuality in the realm of middle schools.