IBRD only - Pupil-teacher ratio, primary

Pupil-teacher ratio, primary in IBRD only was 22.00 as of 2018. Its highest value over the past 48 years was 30.92 in 1975, while its lowest value was 21.51 in 2015.

Definition: Primary school pupil-teacher ratio is the average number of pupils per teacher in primary school.

Source: UNESCO Institute for Statistics (http://uis.unesco.org/)

See also:

Year Value
1970 30.71
1971 30.86
1972 30.10
1973 30.74
1974 30.81
1975 30.92
1976 30.77
1977 30.88
1978 30.75
1979 30.68
1980 30.20
1981 29.74
1982 29.13
1983 28.58
1984 28.33
1985 28.21
1986 27.93
1987 27.69
1988 27.37
1989 26.80
1990 26.70
1991 26.60
1992 26.58
1993 26.59
1994 26.72
1995 26.76
1996 26.91
1997 26.94
1998 27.02
1999 26.97
2000 26.50
2001 25.99
2002 25.57
2003 24.67
2004 24.81
2005 24.49
2006 24.26
2007 24.03
2008 23.92
2009 23.46
2010 23.05
2011 22.78
2012 22.65
2013 22.04
2014 21.65
2015 21.51
2016 22.07
2017 21.98
2018 22.00

Development Relevance: The pupil-teacher ratio is often used to compare the quality of schooling across countries, but it is often weakly related to student learning and quality of education.

Limitations and Exceptions: The comparability of pupil-teacher ratios across countries is affected by the definition of teachers and by differences in class size by grade and in the number of hours taught, as well as the different practices countries employ such as part-time teachers, school shifts, and multi-grade classes. Moreover, the underlying enrollment levels are subject to a variety of reporting errors.

Other Notes: Data retrieved via API in March 2019. For detailed information on the observation level (e.g. National Estimation, UIS Estimation, or Category not applicable), please visit UIS.Stat (http://data.uis.unesco.org/).

Statistical Concept and Methodology: Pupil-teacher ratio is calculated by dividing the number of students at the specified level of education by the number of teachers at the same level of education. Data on education are collected by the UNESCO Institute for Statistics from official responses to its annual education survey. All the data are mapped to the International Standard Classification of Education (ISCED) to ensure the comparability of education programs at the international level. The current version was formally adopted by UNESCO Member States in 2011. The reference years reflect the school year for which the data are presented. In some countries the school year spans two calendar years (for example, from September 2010 to June 2011); in these cases the reference year refers to the year in which the school year ended (2011 in the example).

Aggregation method: Weighted average

Periodicity: Annual

Classification

Topic: Education Indicators

Sub-Topic: Inputs