The final, involving 15 students, was won by Teemu Pihlajasalo from Kuortane following a challenging test in the Nuuksio National Park near the capital.
Participants were given a map and asked to follow a route, completing tasks along the way, including defining forest types.
The finalists also had to assess whether an old spruce stand should be treated as commercial forest or left untouched, as well as linking tree species to certain forest products.
Kirsi Lindroos, general director of the Finnish National Board of Education, told a seminar organised by the Forest Quiz that promoting the understanding of nature, biodiversity and the various aspects of forests was an important task of primary education.
This year’s quiz also asked children to discover new, innovative methods for using wood or forest. One suggestion was to combine tree genes and a glow-worm to grow lampposts in the forest.