Exactly. That's one of the biggest lies the left has told about Obama.
He was an "adjunct professor" = a non-tenure-track resume-enhancer for local lawyers to 'give back' to their alma mater. It's also a way for the law school to keep in touch with local law firms or (in Obama's case) do a favor for some influential local politician.
I was an "adjunct professor" for years at my law school, but I was never under any illusions as to the importance of it or that it meant that I was a particularly learned person or great lawyer. I was helping out my school and getting something nice and public-spirited to put on my resume, nothing more.
“Obama is only an expert in con law, not constitutional law.”