The annual competition which began in 1965 takes place in January.
Ardscoil na Mara, St Angela's, Ardscoil na nDeise, Blackwater Community, Gaelchoiáiste Phort Láirge, St Paul's & Abbey Community are all represented.
One local project looks at whether sweet flavoured e-liquids are a factor in the vaping epidemic among teenagers.
Another says there's a cure in the ground for everything.
In total 1,800 projects were submitted with 550 making though to the finals.