Each individual NFP provider group offers instruction based upon one or two methods; the Ovulation Method or the Sympto-Thermal Method of NFP. Both methods of NFP help couples identify the fertile and infertile times of a woman's cycle with a very high degree of accuracy. This awareness can then be used to plan or postpone having a baby. Each method also encourages shared responsibility by both the husband and wife in using all aspects of their sexuality - physical, spiritual, intellectual, and emotional.

The Ovulation Method of Natural Family Planning is a simple but highly effective way to precisely identify the days of fertility during the menstrual cycle. Cervical mucus appears as a normal discharge around the time of ovulation and is essential to human fertility. Dryness, the absence of mucus, identifies the days of infertility. Through the Ovulation Method instruction, a woman learns to become aware of the presence or absence of mucus as a part of her daily routine. With this information, the couple knows day by day whether or not they are fertile. Together they share the important decision-making process to achieve or avoid pregnancy.

The Ovulation Method can be successfully used by couples if the woman has regular or irregular cycles. If a woman is not ovulating due to breast feeding, discontinuing the contraceptive pill, or for some health condition, infertility can be confidently identified. During the transitional years leading to menopause, couples can also confidently recognize fertility and infertility.

• The presence of mucus indicates the days of fertility. Intercourse on days of fertility is a highly effective means for a couple to achieve pregnancy. The Ovulation Method can be of great help even for couples who have had difficulty becoming pregnant.
• The absence of mucus, or dryness, indicates days of infertility. Extensive research has demonstrated that intercourse on days of infertility will not result in pregnancy.
• Couples learn and successfully use the Ovulation Method under the guidance of professional Natural Family Planning practitioners.

The Sympto-Thermal Method of Natural Family Planning
A woman has several signs of fertility and infertility. The Sympto-Thermal Method is based primarily on two observations of these signs - changes in the cervical mucus and changes in the waking temperature, or the basal body temperature. Changes in the cervix may also be observed as a means of cross checking the other signs.

In the Sympto-Thermal Method course, couples learn to observe, record, and interpret these signs. They can also use them individually as a mucus-only or temperature-only system. By cross checking these signs, couples see how the signs complement and reinforce each other, giving them more confidence in learning and using the method.

• In the Sympto-Thermal Method, the couple will learn about breast feeding and its many benefits for both mother and baby. They will also learn about "ecological breastfeeding", which can postpone the return of fertility.
• A high effectiveness rate is maintained in all types of cycles: regular or irregular, long or short cycles; during breast feeding or pre-menopause. Help is also offered to couples having difficulty achieving pregnancy.
• Acknowledging that fertility is couple fertility, the sympto-Thermal Method encourages participation by both spouses in observing and recording the woman's day-to-day picture of fertility.