Wagga's primary schools have generally performed well in the annual NAPLAN tests with many private and government pupils performing "substantially above" their peers.
Ashmont Public School and Sturt Public School had all their Year 5 results either above or substantially above schools with similar resources and student backgrounds.
Turvey Park Public School, Saint Mary MacKillop Colleges and Wagga Wagga Christian College had Year 5 results above similar schools or higher in four out of five subjects tested by the NAPLAN.
Saint Mary MacKillop primary school principal John Burton told The Daily Advertiser that the results reflected the school's classroom discipline and values of diligence and perseverance.
"It always comes back to teachers," he said.
"Teachers are your most important resource and if you employ good, committed teachers and you development them and that's a huge part of achieving well.
"We have also got a tight-knit group of families who understand what we are doing here at the school and support our ethos and culture in the home as well."
According to the curriculum authority, NAPLAN tests skills in literacy and numeracy "that are developed over time through the school curriculum".
Pupils are tested on reading, writing, spelling, grammar and numeracy every two years to compare their progress over time.
Wagga Wagga Christian College principal Phillip Wilson said the NAPLAN results had shown the school's Year 5, Year 7 and Year 9 student groups had made improvements over the two years since their last test.
"Australian Curriculum, Assessment and Reporting Authority chief executive David de Carvalho, in his letter to Wagga Wagga Christian College sharing this good news, states, 'Improvement of this magnitude is significant and worthy of highlighting and acknowledging'," Mr Wilson said.
"Our students can thrive because they are part of a learning environment which is populated by strongly skilled teachers who excel at identifying and working with the individual needs of each student."
Saint Mary MacKillop's Year 5 writing and grammar results were the highest in Wagga and the surrounding region.
Mr Burton said the school aimed for high quality in the selection of books that students study and are encouraged to read
"Always differences in cohorts of over the last three or four years we really have been working really hard on the curriculum and English literature," he said.
The NAPLAN tests are also designed to highlight areas where individual schools can make improvements.
"Although we have done well in Year 5 writing, our year 3 result is not where we want it to be so there is definitely still got some work to do in writing and numeracy," Mr Burton said.
"Going forward that will be a focus for us in professional development."
Sturt Public School declined to comment and Ashmont Public School and Turvey Park Public School did not respond to requests for comment.