After a long hike, Parvati and Greengrass stepped into the Head Boy’s/Head Girl’s compartment, which had been expansion-charmed so that it could now hold twenty-six people. Parvati smiled at her blue-badged twin sister and at Neville, her fellow fifth-year Gryffindor Prefect. Then Parvati said to the older Gryffindor Prefects, "I bet you’re surprised to see me here!"