Prestigious schools usually had many offices once used by famous figures. When colleagues introduced a newcomer, they would tell them which notable person had once used this office.
Yet even an office used by a famous person would not be left empty forever, preserved exactly as it had been when they "left." Newcomers would arrange their offices according to their own preferences and habits, erasing the traces left by the previous occupant.
After Albus died, his successor, Severus Snape, did not do that. Everything in the office remained as it had been when Albus "left," except for the endless supply of candy and the Elder Wand. Even Phoenix Fawkes's perch remained where it had been.
Back then, the children had been too busy stealing the Sword of Gryffindor from his office to have time to mourn him through his belongings.
When people focused on one thing, they often overlooked everything else. As Cuvier famously said, genius was, first and foremost, attention.
At least when it came to resisting Slytherin, Gryffindor could concentrate. Usually, when they were asked to sit down and do homework or study, their hearts had long since flown off to the Quidditch Pitch or Hogsmeade.
For so many years, right up until Harry Potter entered Gryffindor House, Gryffindor had always been "oppressed" by Slytherin, whether in academics, the House Cup, or Quidditch. By then, Gryffindor's children had already lost hope in Quidditch, despite Head of House Minerva's unwavering support.
Wood carried immense pressure on his shoulders, constantly studying tactics and formations. It was only after Harry appeared that the Gryffindor Quidditch team began to show some improvement.
Using a Firebolt, a flying broom on the level of a supercar, had been cheating to begin with. But by then, Slytherin no longer had the Malfoy family's deep pockets