Pupil / teacher ratio is the number of pupils enrolled at a given level of education divided by the number of teachers at that level (regardless of teaching assignment)

Percentage of schools without first-aid kits is the share of schools without first-aid kits

Percentage of schools without fire exits is the share of schools without a fire exit

Percentage of schools without electricity is the share of schools with no access to permanent sources of electrical power, for example grid / mains connection, wind, water, solar, permanently fuel-powered generator, etc.

Percentage of schools without toilets is the share of schools at a given level of education without a pit latrine, an improved pit latrine, a flush toilet, a pour-flush toilet or a composting toilet

Percentage of schools with potable water is the share of schools at a given level of education with a drinking water facility or water delivery point that is designed to protect water from external contamination, particularly of fecal origin. Examples of potable drinking water facilities include: pipe-borne water, protected wells, boreholes, protected spring water and rainwater

The percentage of schools where there are not enough safe classrooms for instruction to take place (Source: Audrey Chapman (2007) Development of Indicators for Economic, Social and Cultural Rights: The Rights to Education, Participation in Cultural Life and Access to the Benefits of Science: p.145)

The percentage of schools where buildings used by students or teachers are damaged and thus pose a safety risk. Indications that a school building is in a state of disrepair include: a leaky or collapsing roof, broken windows, buckling floors and broken toilets (Source: Audrey Chapman (2007) Development of Indicators for Economic, Social and Cultural Rights: The Rights to Education, Participation in Cultural Life and Access to the Benefits of Science: p.145)

Such measures include publicity campaigns and workshops

Private enrolment refers to pupils or students enrolled at a given level of education in institutions that are not operated by a public authority but controlled and managed, whether for profit or not, by a private body, such as a non-governmental organisation, religious body, special interest group, foundation or business enterprise