In their seventh year, amid a bizarre atmosphere, Lord Voldemort became Head Boy, taking charge of all Slytherin affairs.
This made him even busier, so Severus had to carve out a great deal of time to coordinate other matters.
In their sixth year, they had unquestionably reclaimed the House Cup. Slytherin's strength was always formidable, and since they cared deeply about house points, even when putting on a facade, they managed it brilliantly.
Chapter 144