Classifying Matter - 7th Grade Science Typically, classification is considered to be the placing of similar objects into similar groups. Are there people you call your friends and others you can't stand? You have grouped these people based on something you personally determined. Classification is a part of the science of taxonomy. Taxonomy is the science of grouping or organizing things. Throughout this section of Sci-ber Text, you will learn how the classification developed and how things are classified today. in Public bookmarkswith cellslevelsorganizationorgansself-pacedsystemstissuestutorial