An Analysis of Kiswahili in Secondary Schools Instructional Dynamics: A Case Study of Secondary School Classrooms in Temeke Municipality

Abstract

This study investigates Kiswahili as the primary language of instruction in secondary classrooms in Temeke Municipal Council, Dar es Salaam, Tanzania, to assess its capacity to foster lasting, meaningful learning among adolescents. While English remains the official medium, many students lack proficiency, prompting an exploration of how Kiswahili can enhance classroom interactions. The study used a qualitative design supplemented by descriptive statistical analysis, involving 30 purposively selected participants (teachers and students). Data were gathered through semi-structured interviews, direct classroom observations, and focus-group discussions, documenting questioning strategies, response scaffolding, and the resolution of conceptual misunderstandings in both languages. Interviews probed participants’ comfort, comprehension, and perceptions of the sociocultural value of English versus Kiswahili, while focus groups examined the emotional and cognitive impacts of instruction in a non-native language versus the mother-tongue. Analysis revealed that English-medium lessons often resulted in superficial understanding, lower engagement, and difficulty keeping pace. In contrast, Kiswahili-mediated instruction correlated with higher participation rates, deeper conceptual grasp, and stronger peer collaboration. Descriptive statistics reinforced these patterns, indicating average comprehension scores rose by over 30 percent under Kiswahili instruction. Participants also highlighted Kiswahili’s role in honouring local identity and cultural continuity, making classroom content more accessible and relevant. Based on these findings, the study recommends a strategic policy shift to strengthen Kiswahili’s role in secondary curricula across Tanzania. By leveraging a language that aligns with students’ lived experiences, educational stakeholders can enhance learning outcomes and support more sustainable, culturally grounded pathways to academic success.