Higher education, also called tertiary, third stage, work from home or post secondary education, is the non-compulsory educational level that follows the completion of a school providing a secondary education, web hosting service such as a high school, secondary school. Tertiary education is normally taken to include undergraduate and postgraduate education, register domain name as well as vocational education and training. Colleges and universities are the main institutions that provide tertiary education. Collectively, these are sometimes known as tertiary institutions. Tertiary education generally results in the dedicated hosting receipt of certificates, diplomas, or academic degrees.