Liam Hollinshead and Naomi Martin – both Year-8 students - plus Ekam Minhas of Year 7 each placed second in the finals with their science presentations.
Year 8 student Ryan Ingram received a highly commended award with his "Spray Away" exhibit, an investigation into which natural products available to him in lockdown would kill pest weeds in a paddock.
Jaxon Buik of Year 8 was awarded first place in the material world section with his "Bubble 'n Fizz" exhibit, an investigation into which liquids make starters activate the quickest when making sourdough bread.
Year 7 student Ava Holloway was awarded first place in the technology section with her "Let's Get Physical" exhibit - a game to keep children moving when playing board dames during lockdown and tailoring that game to be accessible to children with a visual disability.
Ava also received the McGowan Special Award for Judges' Choice.
The New Zealand Baking Industry Research Trust Special Award for the Best Use of Flour, or bakery products in a food-related project also went to Jaxon and Naomi received the Dairy Goat Co-operative Special Award for the Best Food, Science and Technology Exhibit.
In total, 32 primary and secondary schools from the greater Waikato region took part in the science fair.
Ōhaupō School is planning to host a school science fair but the date is yet to be confirmed.
It will be open for the school's entire Kauri Hub to show their science investigations to the school and parents.