Absolutely. In fact, he was an adjunct professor there for twelve years (some sources say "lecturer," some say "adjunct professor"-- different schools use different terminology to describe those faculty members who are not employed there full-time); he was sufficiently well-respected that the university's dean has stated in print that the university offered him a full-time job as a professor, but he decided he wanted to go into politics instead.
No, President Obama was not a paid lecturer at the University of Chicago Law School. He served as a senior lecturer there from 1992 to 2004 and did not receive a salary for his work. Instead, he was paid on a per-course basis.
No. He was a student at Harvard law school but not a professor. He has no affiliation with Princeton. He taught law at University of Chicago law school as a senior lecturer.
University of Chicago Law School
He began as a lecturer (new instructors are often called lecturers; they then move up to become senior lecturers). Ultimately, as he got more experience, he seems to have been considered an adjunct professor. The University of Chicago offered him a full-time job as a professor, but he turned it down because he wanted to go into politics.
President Obama was teaching constitutional law at the University of Chicago Law School before he became a senator.
President Obama graduated from Harvard Law School.
Mr. Obama spent several decades living and working in Chicago before he was president.
The only US president with ties to Chicago is Barack Obama.
The girls went to Chicago Lab School, just minutes away from their Chicago home. Barrack Obama taught there and wanted the kids to go to this private school.
President Obama's home is located in Chicago, IL.
He lived in Chicago before becoming president.
He was the Senator of Chicago.
Yes he was, according to the University of Chicago Law School. He was an adjunct instructor and then an adjunct professor of law.