makes a huge difference. it depends what industry you are in. you know some of the more cutthroat competitive ones like consulting and accountancy? look at where those firms get fed from. For example if you take the Big 4 accounting and you rank them EY, Deloitte, PWC, KPMG, look at where each recruit from. School matters. At a Fortune 100 company that my friend works at, there's an internal memo showing the Tier 1 schools like Berkeley, Stanford, MIT getting first dibs, but my local CSU where I'm getting my Masters and lower tier UC schools like Irvine and Davis are "Tier 3" in terms of hiring.
Certainly it helps doing well on your interviews because there's no saving you if you have zero social skills and are from MIT, but when all things are equal, school does help.