What is the Kuppuswamy scale?

The Kuppuswamy scale was proposed by Kuppuswamy in India in 1976. It is widely used to measure the socio-economic-status of an individual in the urban community and is based on three variables — education, occupation and income. Marks are provided for different levels of qualifications, occupations and family incomes per month. According to the scores obtained, the socio-economic classes are divided into upper, middle and lower classes.