What was the actual problem of totto -Chan?

In "Totto-Chan: The Little Girl at the Window," the main problem revolves around Totto-chan's struggles with fitting into a conventional school environment due to her unconventional behavior and curiOSity. She is expelled from her traditional school for being disruptive, which highlights the rigidity of the educational system. Ultimately, her journey leads her to a progressive school where her individuality is celebrated, showcasing the importance of nurturing a child's unique qualities rather than conforming them to standard norms.