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Average government primary school class sizes by year (1997, 2002-2020)

The class size audit is conducted in all NSW government primary, infant and central (primary grades only) schools in March each year.


  • Class size audits were not conducted in 1998, 1999, 2000 and 2001. Data for other years not included in the factsheet is available through the CSV file on the CESE data hub.

  • Students attending schools for specific purposes (SSPs), students in support classes in regular schools and distance education students are excluded from average class size calculations.

  • The average class size for each year level is calculated from regular and multi-age classes that contain a student from that year level. This can result in a lower K-6 average class size than any individual year level.

  • From 2017, school size is based on primary enrolment rather than school classification.

  • Data from earlier years is not replaced in the Class Size fact sheet. Schools change size. Historical data displays the data that was correct in that year.

  • Refer to the individual class size factsheet publication for further information and policy context.

Data Source:

  • Education Statistics and Measurement Unit. Centre for Education Statistics and Evaluation.

Data and resources

Additional Info

Field Value
Title Average government primary school class sizes by year (1997, 2002-2020)
Type Dataset
Language eng
Licence Creative Commons Attribution
Data Status active
Update Frequency annual
Landing Page https://data.cese.nsw.gov.au/data/dataset/cdbb3e43-a60c-3c9d-9dfb-52b00f79a046
Date Published 2015-09-28
Date Updated 2020-09-18
Contact Point
NSW Department of Education
1300 972 196
Data Services <data.services@det.nsw.edu.au>
Temporal Coverage 1997-01-01 - 2020-12-31
Geospatial Coverage NSW81093: New South Wales
Theme Education and Training
Jurisdiction New South Wales
Data Portal NSW Education Data Hub
Publisher/Agency NSW Department of Education
Data Level State-level