My most recent experience with exclusion was when I was an undergrad. I was juggling raising 2 infant children and I had an afternoon course where I had to go pick one up from school. Like any semester I spoke with the lecturer as a matter of courtesy. He said he was ok with it, but every time I had to slip out to go pick up my child, he would make snarky comments. When it came to group assignments, apparently all the mothers ended up in the same group. Whenever we tried to seek clarity on topics, he would shun us. When presentation day came up, our group was pressed the most, and things that he let slide with other presentations, we felt the brunt of it in our grades.