This study aims to examine the impact of childbirth education in Turkey on the adaptation to pregnancy process, concerns about birth, rate of vaginal birth, and adaptation to maternity. This quasi-experimental study with control group was conducted from December 2013 to December 2014. The sample size was 132 primiparous pregnant women (n(experimental) = 66, n(control) = 66). The average age of the pregnant women in the experimental and control groups was 24.41 +/- 3.92 and 23.68 +/- 4.19, respectively. The study showed that experimental group participants had lower concerns about birth, higher levels of knowledge, and faster adaptation to pregnancy and postpartum process; they could also give positive feedback about labor pain and action and could start breastfeeding at an earlier stage when compared with those in the control group (p < .05). Childbirth education classes increase the knowledge of pregnant women and positively contribute in pregnancy, labor, and the postpartum process.