The second season of The New Adventures of Old Christine premiered on CBS on Monday nights from 9:30/8:30/8:00 pm from September 18, 2006 and concluded on May 7, 2007.

In this season, due to Richard and Christine's brief kiss, Richie believes that his parents have gotten back together much to his parents' dismay.

Barb decides to start working at the gym with Christine, while Christine falls hard for Richie's new teacher, Mr. Harris.

Eventually, New Christine takes Richard back and Mr. Harris takes a new teaching job at another school to be with Christine.

Christine's attraction to the handsome Mr. Harris causes a scene at a school fund-raiser--especially after she wins a playdate with him.