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Average government primary school class sizes by school size (2009-2021)

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


  • 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 school size (2009-2021)
Type Dataset
Language eng
Licence Creative Commons Attribution
Data Status active
Update Frequency annual
Landing Page https://data.cese.nsw.gov.au/data/dataset/287e470b-7170-4a3a-935b-51480292e459
Date Published 2017-08-01
Date Updated 2021-10-22
Contact Point
NSW Department of Education
Data Services <data.services@det.nsw.edu.au>
Temporal Coverage 2009-01-01 - 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