4.5: Classification

The Purpose of Classification in Writing

The purpose of classification is to break down broad subjects into smaller, more manageable, more specific parts. We classify things in our daily lives all the time, often without even thinking about it. It is important, however, to be sure to use a single basis for the division of categories; otherwise, you may end up with items that fall into multiple categories. For example, cars can be classified by type (convertible, sedan, station-wagon, or SUV) or by the fuel they use (diesel, petrol, electric, or hybrid). Smaller categories, and the way in which these categories are created, help us make sense of the world. Keep both of these elements in mind when writing a classification essay. It’s best to choose topics that you know well when writing classification essays. The more you know about a topic, the more you can break it into smaller, more interesting parts. Adding interest and insight will enhance your classification essays.

Exercise 1

On a separate sheet of paper, break the following categories into smaller classifications.

• The United States
• Colleges and universities
• Beverages
• Fashion

The Structure of a Classification Essay

The classification essay opens with a paragraph that introduces the broader topic. The thesis should then explain how that topic is divided into subgroups and why. Take the following introductory paragraph, for example:

Example \(\PageIndex{1}\):

When people think of New York, they often think of only New York City. But New York is actually a diverse state with a full range of activities to do, sights to see, and cultures to explore. In order to better understand the diversity of New York State, it is helpful to break it into these five separate regions: Long Island, New York City, Western New York, Central New York, and Northern New York.

The underlined thesis explains not only the category and subcategory, but also the rationale for breaking the topic into those categories. Through this classification essay, the writer hopes to show the readers a different way of considering the state of New York.

Each body paragraph of a classification essay is dedicated to fully illustrating each of the subcategories. In the previous example, then, each region of New York would have its own paragraph. To avoid settling for an overly simplistic classification, make sure you break down any given topic at least three different ways. This will help you think outside the box and perhaps even learn something entirely new about a subject.

The conclusion should bring all of the categories and subcategories back together again to show the reader the big picture. In the previous example, the conclusion might explain how the various sights and activities of each region of New York add to its diversity and complexity.

Exercise 2

Using your classifications from Exercise 1, write a brief paragraph explaining why you chose to organize each main category in the way that you did.

Exercise 3

Consider things that are a part of your daily life. Create a list that classifies these items both as overall categories and then within sub-topics.

Contributors and Attributions

Adapted from Successful College Composition (Crowther et al.). Sourced from LibreTexts, licensed under CC BY-NC-SA .

Adapted from Let's Get Writing (Browning, DeVries, Boylan, Kurtz and Burton). Sourced from LibreTexts, licensed under CC BY-NC-SA .