Interesting, I'm in my mid 30s and removed the dates of graduation when I was looking 3-4 yrs ago. The person I had reviewing my resume said removing the dates was a dead give away and they may assume I'm even older than I am so I put it back. Age hasn't been an issue for me yet but I have had people say things like "You don't look like you have a kid that old" and other strange things when we talk about personal things and they find a little about me. Now that I'm even older I may just remove education completely and try to get extra sleep leading up to any interviews to minimize my eye elasticity.