As an established neighbourhood built decades ago, Mayfair generally has its school infrastructure already in place, unlike a newer suburb still waiting on capacity to catch up with home construction.
Because catchment lines can be redrawn as enrollment shifts across the city, confirming the current assignment for a specific address is more reliable than assuming based on the neighbourhood's history.
A quick check with the relevant division settles it before you make a decision based on an outdated assumption. Get your hand-reviewed valuation from Joel Dyck.