An alma mater is the school, college, or university that someone has graduated from.

Which is correct graduated from or graduated?

"I graduated from college" is the most accepted use of graduate in this context. You can also say "I graduated college" or "I was graduated from college." Both are frequently used, but to some people they are considered incorrect.

How do you use the word graduated?

Verb He graduated from the university last June. They both graduated with honors. She graduated with a degree in history.