This study aims at finding the impact of indigenization of the learning material on teaching reading and writing skills of ESL learners. The term “indigenization” is used to describe when natives take something from outside and make it their own. The process of language indigenization implies the adaption of language to fit the communicative needs of those adopting it. Indigenization of contents affects learners’ procedural memory and knowledge absorption capacities. Experimental research design was adopted to measure the effectiveness of independent variable (Indigenized material) on the dependent variable (reading and writing skills). The sample was drawn from a private college of intermediate level students and distributed into two homogenous groups through random assignment technique. To ascertain the impact of indigenized material on the reading and writing skills, treatment was applied for 8 weeks. Findings revealed significant increase in the reading and writing grades of ESL learners who were taught through indigenized material. It is acclaimed fact that target language cultural competence enhances English proficiency skills among language learners, however contextualization and indigenization of material according to local settings also develop effective language proficiency skills in countries where English is used as second language.