[1] CCL has grown to be the largest natural family planning provider in the United States, teaching the sympto-thermal method to almost 8,000 couples in 2004.
[2] Teaching couples are required to agree with and live by the moral and religious beliefs advocated by CCL.
The membership includes a subscription to CCL's bi-monthly magazine and counseling or assistance in interpreting sympto-thermal charts.
[8] CCL has volunteers called Promoters or Public Relations Representatives who work to increase the visibility of the organization.
[11] While CCL strongly encourages use of their sympto-thermal method, they also teach mucus-only and temperature-only systems.
[14] The popular fertility awareness writer Katie Singer has written about the important role Sheila Kippley and CCL have played in conducting and promoting research on lactational amenorrhea.