Budding scientists will travel from local schools to Inverell on Friday, when more than 200 students take on the University of Newcastle's Science and Engineering Challenge.
As well as Tenterfield and Glen Innes, there will be teams from Inverell and Warialda testing their team work and problem solving skills.
Eight different activities will introduce the youth to a broad range of science and engineering concepts. Teams will take on a coding challenge, where they will learn to send messages to each other in code.
The flat pack activity will test their ingenuity as they work to build a table and two chairs for the least cost to hold the maximum weight.
Space fans will enjoy the 'mission to Mars', which involves designing a buggy which can survive being pulled along rough terrain with weights on top.
Bridge building will once again serve as the grand finale of the day as teams compete to support the greatest weight using limited materials.
At least three primary schools will once again face the challenge alongside six high schools.
"It gives them the opportunity and they actually do really quite well, because it's not learned work - it's teamwork and problem solving," organiser Sue Moran said.
"They actually do really well and aren't disadvantaged because they're younger."
The event is designed to spark an interest in science and engineering in school students.
Rotarians from Glen Innes, Warialda, Inverell Rotary and Inverell East Rotary will donate their time to help supervise the busy day. Engineers Australia are sponsors of the event.