In today’s global world, the importance of English cannot be denied and ignored since English is the most common language spoken everywhere. With the help of new technologies, English has been playing a major role in many sectors including, medicine engineering, and education, which, in my opinion, is the most important field where English is needed. Particularly, as a developing country, Morocco needs to make use of this world-wide spoken language in order to maintain its international image. This can merely be based on the efficiency of post-secondary education. The rationale of this presentation is to talk about the teaching and learning of English for Specific Purposes (ESP). Consequently, English should be the medium of instruction at universities in Morocco for the following three reasons: finding a high-quality job, communicating with the international world, and accessing scientific and academic sources in the students’ major fields.