Class or The Class may refer to:

Common uses not otherwise categorized

Class (biology) In biological classification, class ( la, classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank. It is a group of related taxonomic orders. Other well-known ranks in descending order of size are life, domain, kingdom ...

, a taxonomic rank *

Class (knowledge representation) In knowledge representation, a class is a collection of individuals or objects. A class can be defined either by extension (specifying members), or by intension (specifying conditions), using what is called in some ontology languages like OWL. Acc ...

, a collection of individuals or objects * Class (philosophy), an analytical concept used differently from such group phenomena as "types" or "kinds" *

Class (set theory) In set theory and its applications throughout mathematics, a class is a collection of sets (or sometimes other mathematical objects) that can be unambiguously defined by a property that all its members share. Classes act as a way to have set-like ...

, a collection of sets that can be unambiguously defined by a property that all its members share * Hazard class, a dangerous goods classification *

Social class A social class is a grouping of people into a set of Dominance hierarchy, hierarchical social categories, the most common being the Upper class, upper, Middle class, middle and Working class, lower classes. Membership in a social class can for ...

, the hierarchical arrangement of individuals in society, usually defined by wealth and occupation * Working class, can be defined by rank, income or collar

Arts, entertainment, and media

* "The Class" (song), 1959 Chubby Checker song * Character class in role-playing games and other genres * Class 95 (radio station), a Singaporean radio channel

Films

* ''Class'' (film), 1983 American film * ''The Class'' (2007 film), 2007 Estonian film * ''The Class'' (2008 film), 2008 film (''Entre les murs'')

Television

* ''Class'' (2010 TV series), a 2010 British television programme, broadcast on CBBC * ''Class'' (2016 TV series), a 2016 British spinoff from ''Doctor Who'' * ''The Class'' (TV series), a CBS sitcom

Literature

*'' Class: A Guide Through the American Status System'' by Paul Fussell * ''Class'' (Pacifico novel), a 2014 novel by Francesco Pacifico * ''Class'' (Rosenfeld novel), a 2017 novel by Lucinda Rosenfeld * ''The Class'' (Segal novel), a 1985 novel by Erich Segal

Computing

* Class (computer programming), a fundamental concept of object-oriented programming * Class (warez), a defunct group in the warez scene * C++ classes, program-specific data types * Class attribute (HTML), a feature of many HTML and XHTML elements * Class attributes (computer programming), defining the structure of a class * Complexity class, a set of problems of related complexity in computational complexity theory *

Java class file A Java class file is a file (with the filename extension A filename extension, file name extension or file extension is a suffix to the name of a computer file (e.g., .txt, .docx, .md). The extension indicates a characteristic of the file cont ...

, the interpretable bytecode of a compiled Java program *

Pseudo-class Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language such as HTML or XML (including XML dialects such as SVG, MathML or XHTML). CSS is a cornerstone technol ...

, in cascading style sheets *

Type class In computer science, a type class is a type system construct that supports ad hoc polymorphism. This is achieved by adding constraints to type variables in parametrically polymorphic types. Such a constraint typically involves a type class T and ...

, a type system construct that supports polymorphism

Education

* Class (education), a group of students attending a specific course or lesson * Class, a course (education) * Class, a lesson or course session, in education * Classroom, a room where classes are held

Law and government

* Class, a group of people involved in a class action lawsuit * Classes of United States senators, for describing the schedules of elections for Senate seats

Transportation

*Class (locomotive), a single design of a locomotive as assigned by the railroad *Class rating, an allowance to fly aircraft of similar design *Classification of United States railroads: **Class I railroad **Class II railroad **Class III railroad *Ship class, a group of ships of similar design *Travel class, a quality of accommodation on public transport *Vehicle size class, a way of classifying cars