Recent research on English as a foreign and second language has indicated that collocations are crucial to mastering the language.Hence, its significance in EFL learners' writing skills is crystal clear.Therefore, the current research has been conducted to explore the impact of using a corpus-based collocation program on developing third-year faculty of Education English majors' essay writing. The research adopted the quasi-experimental method (a pre-post control group design). Sixty students in third-year faculty of Education English majors participated in the research that lasted eight weeks in Using Corpus-Based Collocation Program to Promote Writing Skills of College-Bound EFL Majors 812 test (in favor of the treatment group). Also, the results showed that using a corpus-based collocation program positively affected thirdyear faculty of Education English majors' collocational knowledge and use in their essay writing. In the light of the research findings, recommendations and suggestions for further research were offered.