The three schools had attendance rates under 89 per cent in the first semester of 2014.

The figure was calculated based on the number of actual student days attended during the period as a percentage of the number of possible student days.

Dubbo College Delroy Campus had the lowest level of attendance at 86 per cent, comprised of 83 per cent attendance from Indigenous students and 89 per cent of non-Indigenous students.

The student attendance rate for Dubbo West Public School was the second lowest.

Overall there was an 87 per cent attendance rate for the first semester of 2014, 83 per cent Indigenous students and 92 per cent non-Indigenous students.

Dubbo College South Campus had an 88 per cent attendance rate.

The statistics are relatively similar to 2013.

Dubbo College Delroy Campus remained consistent, while the Dubbo College South Campus attendance dropped by one per cent and Dubbo West Public School decreased by three per cent.

Dubbo Public School, Macquarie Anglican Grammar School, St Laurence's Primary School and St Pius X Primary School all had the highest levels of attendance at 95 per cent.

Federal Education Minister Christopher Pyne said the My School data was a valuable research tool.

"Late last year we included new data on school attendance as part of our approach to ensure a stronger focus on keeping kids in schools," Mr Pyne said.

"And over the coming year we plan to work with the states and territories on ideas to make the website even easier to use and understand and provide more information about students' progress and educational outcomes."

The My School website is jointly owned by the Australian Government and states and territories, and is managed by the Australian Curriculum Assessment and Reporting Authority.