Average government primary school class sizes by year (1997, 2002-2024)

### Data Notes\r\n\r\n* Class size audits are conducted by CESE (Centre for Education Statistics and Evaluation) in March each year. Audits were not conducted in 1998, 1999, 2000 and 2001. \r\n\r\n* Data for 2020 should be treated with caution. The collection took place in March when schools were impacted by COVID-19, so fewer data checks were carried out.\r\n* 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.\r\n\r\n* The average class size for each grade is calculated by taking the number of students in all classes that a student from that grade is in (including composite/multi age classes) divided by the total number of classes that includes a student from that grade. This can result in a lower Kindergarten to Year 6 average class size than any individual year level.\r\n\r\n* From 2017, school size is based on primary enrolment rather than school classification.\r\n\r\n* Schools change size, so data in Table 2 is not necessarily comparable to previous iterations in earlier fact sheets.\r\n\r\n### Data Source\r\nEducation Statistics and Measurement, Centre for Education Statistics and Evaluation. \r\n\r\n### Data quality statement\r\nThe [Class Size Audit Data Quality Statement](https://metadata.nsw.gov.au/item/13132/qualitystatement/class-size-audit-data-quality-statement) addresses the quality of the Class Size Audit dataset using the dimensions outlined in the NSW Department of Education's data quality management framework: institutional environment, relevance, timeliness, accuracy, coherence, interpretability and accessibility. It provides an overview of the dataset's quality and highlights any known data quality issues.