What is the meaning of universalisation of education?

As per the National Policy of Education (1986), universalisation mean

The universalisation goal—whether of elementary education or adult literacy—has two aspects, namely :—(i) universal enrolment and retention of children/persons in the relevent age group in the elementary school/non formal education/adult education system and their regular attendance, and (ii) universal attainment by them of at least the specified minimum levels of learning, with due stress on the inculcation of essential values.

The above two components could be termed as the numerical and qualitative aspects of the universalisation goal—the latter being the ultimate end, and the former the means to achieve that end.