For his latest work Jouko has interviewed and collected memories of 24 Finnish orphan children sold in an auction "huutolaislapsi".
The technique spread from Finnish children to businessmen because the kids taught their parents.
At one point, every eighth Finnish child was born in Sweden.
In fact, the first national test a Finnish child sits is when he or she is about to leave school, at 18.
Compulsory schooling of Finnish children was enacted in 1921.
In addition, Sweden received some 70,000 Finnish children who were sent to Sweden to find safety during the 1940s.
Finnish children have the highest serum cholesterol levels in the world because of their high intake of saturated fat.
Finnish children of this time were generally put to work as soon as they became capable, and Lauri did the same.
Finnish missionary children went to school in Swakopmund since 1945.
In the mid-1980s, about 2 percent of Finnish children were affected by this law.