Everybody that read "Hogwarts: A History" knew you couldn't Apparate at Hogwarts. But a lot of students didn't read that book. Plus it didn't mention outside of the castle itself. So a lot of students were Apparating around school grounds and sometimes beyond.
One Ravenclaw was good enough to Apparate home and pick up a few things from her bedroom. She failed to mention she was almost hexed by her mother who didn't expect to have a visitor in her bedroom.
During a Hogsmeade weekend, numerous students practiced Apparating around town. One mis-guided student showed up in Honeydukes, in the middle of the front window display. That caused a big ruckus.
If you were able to Apparate, where would you practice to? Tell us in your own words.