The current study was mainly intended to develop the EFL secondary schoolers' communicative competence and success and failure attribution through communicative activities. To fulfill this purpose, it adapted the two-group pre-post design, quasi-experimental- control group design. Sixty EFL first secondary schoolers from Hussienia Secondary School for Girls, Hussienia Directorate, Sharkia Governorate, Egypt, were randomly assigned into two groups; thirty schoolers for the experimental group and thirty for the control one. The instruments of the study were a communicative competence test, and success and failure attribution scale. The instruments were pre-post administered to both groups. The current study was conducted over a period of four weeks, over ten session for researching, acting, reflecting and practicing communicative competence, through the first term of the academic year 2022- 2023. Finally, the results of the study revealed that communicative activities-based program had a positive effect on developing the EFL communicative competence and success and failure attribution of  secondary stage  schoolers.