Because each student is unique, the diversity in their learning and speed of learning needs to be considered to help them achieve the best process and outcome. As experts propose differentiated instruction as the method for reaching out to the students' uniqueness, the present article will elaborate the definition and characteristics of differentiated instruction, as well as its design, strengths, and weaknesses in English for Foreign Language context, in order to highlight the strength and weakness of differentiated instruction as proven by previous studies. The present study employed George's (2008) model of library research. As the main argument, the present study adopted the concept of differentiated instruction from Tomlinson (1999Tomlinson ( , 2001Tomlinson ( , 2014, Imbeau (2010), andMoon (2013) to answer the present study's research questions, supported by other relevant sources. It is revealed that differentiated learning aimed to facilitate students' differences to allow them equal opportunities to achieve the learning goals through variations of the curriculum. While it is beneficial for the students, it also poses challenges for the teachers due to time constraints, increased workload, and possible misunderstanding due to the different treatments among the students. Thus, to benefit from differentiated instruction, EFL classrooms require a firm commitment from the teacher with solid support from the school management.