A social class is a set of subjectively defined concepts in the social sciences and political theory centered on models of social stratification in which people are grouped into a set of hierarchical social categories, the most common being the upper, middle and lower classes.

Education is the process of facilitating learning, or the acquisition of knowledge, skills, values, beliefs, and habits.

Educational methods include storytelling, discussion, teaching, training, and directed research.

Education frequently takes place under the guidance of educators, but learners may also educate themselves.

Education can take place in formal or informal settings and any experience that has a formative effect on the way one thinks, feels, or acts may be considered educational.

The methodology of teaching is called pedagogy.

From a sociological perspective, social norms are informal understandings that govern the behavior of members of a society.

Social psychology recognizes smaller group units, such as a team or an office, may also endorse norms separately or in addition to cultural or societal expectations.

In other words, norms are regarded as collective representations of acceptable group conduct as well as individual perceptions of particular group conduct.

They can be viewed as cultural products (including values, customs, and traditions) which represent individuals' basic knowledge of what others do and think that they should do.

A holiday is a day set aside by custom or by law on which normal activities, especially business or work including school, are suspended or reduced.

Generally, holidays are intended to allow individuals to celebrate or commemorate an event or tradition of cultural or religious significance.

Holidays may be designated by governments, religious institutions, or other groups or organizations.

The degree to which normal activities are reduced by a holiday may depend on local laws, customs, the type of job being held or personal choices.

Political freedom (also known as political autonomy or political agency) is a central concept in history and political thought and one of the most important features of democratic societies.

Political freedom was described as freedom from oppression or coercion, the absence of disabling conditions for an individual and the fulfillment of enabling conditions, or the absence of life conditions of compulsion, e.g. economic compulsion, in a society.

Although political freedom is often interpreted negatively as the freedom from unreasonable external constraints on action, it can also refer to the positive exercise of rights, capacities and possibilities for action, and the exercise of social or group rights.

The concept can also include freedom from "internal" constraints on political action or speech (e.g. social conformity, consistency, or "inauthentic" behaviour).

The concept of political freedom is closely connected with the concepts of civil liberties and human rights, which in democratic societies are usually afforded legal protection from the state.