The guidance office, where Buffy has her new desk and the principal's office are chock full of IKEA goodness. Season 7 aired 2002-2003 so some of the GALANT system shown in the following screencaps have been discontinued.
Seen here is the SPONTAN magazine rack which is used to hold her files.
GALANT system: drawer unit, filing cabinet, desk top shelf
A full view of the desk itself with KNÖS desk pad.
The waiting room has a SPONTAN magazine rack and LACK end table.
The principal's office with full GALANT desk and wall cabinets.
The conference table in his office has JULES chairs.
What threw me off at first was the fact that the desks & tables used VIKA KAJ legs with the GALANT desktops. Both GALANT legs & the VIKA KAJ are adjustable but GALANT A is angled.