Education is a social institution that provides members of society with important knowledge, skills, and cultural norms and values. There are three main types of education: formal, non-formal, and informal. Formal education refers to a structured system from primary to tertiary levels. It involves compulsory elementary education, secondary education to learn employable skills, and higher education institutions. Non-formal education provides organized learning outside the formal system. Informal education involves lifelong learning from daily experiences. Education functions to create a productive citizenry with knowledge and skills, and allows for self-actualization as individuals discover their potential and become self-fulfilled.