Professional Learning Community Activities Conducted by Secondary School Biology Teachers in Dodoma City, Tanzania

Professional Learning Communities (PLCs) are an essential mechanism for collaborative professional learning of teachers. However, evidence remains limited on the specific activities secondary school Biology teachers engage in within PLCs and their perceived contribution to competence-based teaching in Tanzania. This study investigated the PLC activities conducted by secondary school Biology teachers in Dodoma City and their perceived contribution to competence-based teaching practices. Social Constructivist Theory guided the study. A cross-sectional survey design was adopted, and data were collected through a structured questionnaire from 103 Biology teachers in 60 randomly selected public and private secondary schools and analysed using descriptive statistics. The key findings show that teachers engaged mainly in practice-oriented activities: collaborative lesson planning (83.5% of respondents) and peer observation (52.4%) were the only activities reported by more than half of the teachers, whereas setting and reviewing goals (21.4%) and action research and inquiry-based learning (16.5%) were the least practised. Teachers rated the contribution of PLC activities to competence-based teaching as great on all six indicators (M = 3.99–4.18). The strongest contributions were in preparing competence-based lesson plans integrating lessons into real-life situations and involving students in classroom activities, while formative assessment received the lowest, though still high, rating. These findings imply that PLCs benefit learners by helping teachers deliver more learner-centred, contextualised, and participatory lessons, which are the classroom conditions through which competence-based learning and academic performance are improved. The study recommends strengthening inquiry-oriented PLC activities, particularly action research and the collaborative analysis of assessment evidence, so that PLCs can more fully support learners’ achievement.