Heidi 3D Season 1 Episode 31 The School Test Episode Title:The School Test.Episode Description:Mr Traber, the teacher, organizes a test at school for the end of term. Karl, Theresa, William and Peter have to pass it, but not Heidi, as she is in the small section. The best student will receive a book and a coin. Theresa wants to beat Peter, who is now a good student, thanks to Heidi's help and advice from her time in Frankfurt with Grandmamma.