This kind of discrimination amongst peers is stupid, yes. But there's a reason it exists. Some old school bosses (the kind whose PQE same as your age) still have this mindset, and they can be quite tactless about it.

If you've never been called out in front of your colleagues for your education and degree class, consider yourself very, very lucky. And it goes both ways - "Oxford like that one ah?"

You can feel your kukubird retract inside you