82,000 students in Years 3, 5, 7 and 9 from across the state will begin taking part in NAPLAN testing today.
Around 64,900 students from more than 500 schools across South Australia will be sitting the test online, compared to 18,500 students from around 140 schools who did NAPLAN online for the first this time last year.
South Australia is working towards transitioning all schools to NAPLAN online by 2020.
Students are assessed across four domains: reading, writing, language conventions (spelling, grammar and punctuation) and numeracy.
The paper and pencil assessment will take place over the next three days. Schools participating in NAPLAN online will have the flexibility to complete the test over a nine-day period.
Help desk staff will be available to assist schools throughout the testing period in the event that any technical issues arise outside of the school's control.