A prominent lawyer with a major New York law firm said on Friday that he intended to plead guilty to criminal charges arising from the college admissions cheating scandal.

Gordon Caplan, who had been co-chairman of the firm Willkie Farr & Gallagher, was charged with conspiracy to commit mail fraud after he allegedly paid $75,000 to make sure his daughter got a good score on a college-admissions exam.

“I take full and sole responsibility for my conduct, and I am deeply ashamed of my behavior and my actions,” Mr. Caplan said in a statement. “I apologize not only to my family, friends, colleagues and the legal bar, but also to students everywhere who have been accepted to college through their own hard work.”

Mr. Caplan was suspended last month as co-chairman of Willkie Farr.

The law firm said Friday that Mr. Caplan was no longer a partner there in light of his decision to plead guilty.