Throughout the series, it is established that Shirley is a "Baptist" (general, but enough info), however, in various episodes she does the Catholic "Sign of the Cross" (signum crucis). If she were a baptist (any variation) she would never do this.
The Colorado Bar Association automatically disbars anyone who lies about having a bachelor's degree for a minimum of eight years, not the conditional four-year probationary period Jeff is given to obtain said degree. Further, reinstatement to the bar after that period would be highly unlikely given his previous dishonesty.
Jeff is said to be attending Greendale for four years in order to attain his Bachelor's Degree. While the majority of Community Colleges only offer 2 year AA degrees, currently 17 states (including Colorado) allow Community Colleges to offer 4 year Bachelor's Degrees.