“Harry Potter and the Sorcerer’s Stone,” the first book in the series, was published in 1997. The film version of that novel appeared in 2001. This year’s crop of college freshmen was born between those two cultural milestones, which means a huge number grew up reading the Potter books or watching the movies or both. Many of them have an expectation (or perhaps a hope) that going off to college means going off to a campus that resembles the Hollywood version of Hogwarts, full of peaked roofs, gargoyles, stone floors, stained glass and huge dining halls warmed by multiple fireplaces.