تبعیضِ طبقاتی نگرش و کُنشِ از رویِ پیشداوری، تعصب و تبعیضِ فرد و بر پایهٔ طبقهٔ اجتماعیِ بالاترِ فرد است. پیامد این رویکرد شاملِ نگرش، رفتار، کنشها و شیوههایی به نفعِ طبقه بالا (جامعهشناسی) و به زیانِ طبقهٔ پایینتر است.
Class discrimination, also known as classism, is prejudice or discrimination on the basis of social class. It includes individual attitudes, behaviors, systems of policies and practices that are set up to benefit the upper class at the expense of the lower class or vice versa. Social class refers to the grouping of individuals in a hierarchy based on wealth, income, education, occupation, and social network. This is includes but is not limited to disability, gender, nationality , race or religion status and there are many other factors that are included in Class discrimination. “Experiences of discrimination are often subtle rather than blatant, and the exact reason for unfair treatment is often not clear to the victim. This form of discrimination has been hidden very well in today's society as forms that you used to fill out during an application. From race or income to religious belief they are many subtle ways of class discrimination in today's society.
Class structures existed in a simplified form in pre-agricultural societies, but it has evolved into a more complex and established following the establishment of permanent agriculture-based civilizations with a food surplus. Classism started to be practiced around the 18th century. The list that people was classified by the lowest status to the highest starting from the Serfs ( Peasants) Knights (Vassals) Nobles (Barons) and at the King (Monarch)
Socioeconomic, racial/ethnic and gender inequalities in academic achievement have been widely reported in the United States, but how these three axes of inequality intersect to determine academic and non-academic outcomes among school-aged children is not well understood.
Institutional versus personal classism
The term classism can refer to personal prejudice against lower classes as well as to institutional classism, just as the term racism can refer either strictly to personal prejudice or to institutional racism. The former has been defined as "the ways in which conscious or unconscious classism is manifest in the various institutions of our society".
As with social classes, the difference in social status between people determines how they behave toward each other and the prejudices they likely hold toward each other. People of higher status do not generally mix with lower-status people and often are able to control other people's activities by influencing laws and social standards.
The term "interpersonal" is sometimes used in place of "personal" as in "institutional classism (versus) interpersonal classism" and terms such as "attitude" or "attitudinal" may replace "interpersonal" as contrasting with institutional classism as in the Association of Magazine Media's definition of classism as "any attitude or institutional practice which subordinates people due to income, occupation, education and/or their economic condition".
Classism is also sometimes broken down into more than two categories as in "personal, institutional and cultural" classism. It is common knowledge in sociolinguistics that metasocial language abounds in lower registers, thus the slang for various classes or racial castes.
In the Arab Gulf region, Western workers and local nationals are given better treatment or are preferred. 
Class discrimination can be seen in many different forms of media such as television shows, films and social media. Classism is also systemic , and its implications can go unnoticed in the media that is consumed by society. Class discrimination in the media displays the knowledge of what people feel and think about classism. When seeing class discrimination in films and television shows, people are influenced and believe that is how things are in real life, for whatever class is being displayed. Children can be exposed to class discrimination through movies, with a large pool of high-grossing G-rated movies portraying classism in various contexts.  Children may develop biases at a young age that shape their beliefs throughout their lifetime, which would demonstrate the issues with class discrimination being prevalent in the media.  Media is a big influence on the world today, with that something such as classism is can be seen in many different lights. Media plays an important role in how certain groups of people are perceived, which can make certain biases stronger. Usually, the lower income people are displayed in the media as dirty, lack of education and manners and homeless. From both sides of that being displayed in the media, people are able to take what they see, whether that be true or not and believe what they want to believe. People can use the media to learn more about different social classes or use the media, such as social media to influence others on what they believe. In some cases, people who are in a social class that is portrayed in a bad way by the media can be effected in school and social life as "[t]eenagers who grew up in poverty reported higher levels of discrimination, and the poorer the teens were, the more they experienced discrimination".
The European Convention on Human Rights contains protections against social class ("social origin") discrimination, but only a few signatory states have signed and ratified these protections[dubious ]. Those that have signed and ratified this have implemented domestic laws against favela discrimination because of social class (in the same way that race discrimination, sex discrimination or age discrimination have been legislated against).