Older Ravenclaws have finely honed the art of asking just the right argumentative questions to direct their teacher onto an entire-class-session-long tangent about something entirely irrelevant to the course material.
Can you imagine Ravenclaws trying to overhaul the entire school system with Muggle ideas.Trying to figure out how to best teach people,more concerned with how people learn than what they're learning.
"Why do we force people to learn things they aren't interested in,we should create our own curriculum."
"We should figure out everyone's learning styles."
"We need smaller class sizes."