Readers were transported to Hogwarts for the first time with the release of Harry Potter And The Sorcerer’s Stone in 1998, but what if the Boy Who Lived was not our first significant magical student? With her magical bag, enchanted umbrella, cleaning spells, and ability to transport people into paintings, Mary Poppins may have been a Hogwarts student herself. The latest episode of In Theory makes a compelling case that not only was the world’s most famous nanny “practically perfect in every way,” she may have also been trained by the best.

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