I don't think its a point system. I just think if an entire department of any company beyond "small" is homogenously one demographic then there's likely a sign

I don't think its a point system. I just think if an entire department of any company beyond "small" is homogenously one demographic then there's likely a sign that something is going wonky with how that department is hiring/retaining staff. I'd be suspicious of an entire engineering department (of a company of any significant size) that all came from one school, if I was applying to that company and I wasn't from that school. It's simple group psychology that an extremely uniform group is likely heavily biasing itself for more of that extremely uniform demographic. If that extremely uniform group is of one specific race, gender, or sexuality, that might be a yellow (or red) flag.