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I am very thank for your corrections. I'm Matt Frattali, I teach technology at the Lab School. Every year for one day we study Wikipedia. We talk about the accuracy of importance of Wikipedia. We start out in the sandbox to learn the basics of editing. I like students to edit the official Lab School page since authenticity is important. This year, to prevent vandalism, students were instructed to make a single edit: to change the word ""learning difficulty"" to""learning difference"". There were thirty students in the room, the vast majority followed directions, and clearly one or two did not, and I'm very sorry for that. We all used the same login ""Lswuser"" since it's impossible to create 30 accounts from one IP simultaneously. Thanks again for making the corrections."