After graduating from university, I was able to, uneventfully, get a job at my company of choice.
Are you saying that you can't graduate from high school because you haven't attended enough? Don't be ridiculous.
My brother overcame his disability and graduated from college. I’m very proud of him. His graduation is the result of his determination and effort.
You know that 卒業 is "graduation." Make it a verb, and you have to graduate.
The reading is just the same as the vocab word 卒業.