No. Artists didn't go to art school in the Renaissance times. They became apprentices at a master's workshop and learned the trade that way. In Leonardo da Vinci's case, he was an apprentice to...
Jean-Michel Basquiat did not attend formal art school. He learned at City as School in Brooklyn, NY where he met his friend (and classmate) Al Diaz. The two young men took up graffiti art around the...