Teacher-Related Factors as Predictors of Students’ Achievement in English Grammar in Gambian Senior Secondary Schools

Studies have shown that several factors predict students’ achievement in any second language classroom. 'ese factors include learner, school, text, and teacher-related variables. The teacher is indispensable in the instructional procedure; therefore, the quality of a teacher in terms of teaching experience, subject mastery, and questioning behaviour can determine ESL students’ learning outcomes to a large extent. This study examined the relationship between teachers’ subject mastery and questioning behaviour and students’ achievement in English grammar in the Gambia. The research design is a descriptive survey that comprised 300 students and 10 English language teachers from four senior secondary schools in Kanifing Municipal Council. Two research instruments were used and the data were analysed using PPMC and MRA. The result showed that independent variables predicted students’ achievement in English grammar. Teachers’ subject mastery (β = 0.476; t = 12.132; p < 0.05) and questioning behaviour (β = 0.204; t = 5.195; p < 0.05) contributed significantly to students’ achievement in English grammar relatively and jointly. Recommendations were made to stakeholders to ensure regular training of in-service and preservice language teachers on the teacher and teaching-related variables in ESL classrooms.