WhatsApp + LLM Chatbot for Teacher Professional Development — Bertoua, Cameroon

In September 2025, an international NGO running in-service teacher professional development (TPD) across Cameroon piloted a WhatsApp-based chatbot as an alternative to its usual online-form training materials, in Bertoua, in the country's East Region. The chatbot delivered structured modules on named pedagogical approaches — Teaching with Love & Logic, Play-Based Learning and The Stoplight Approach — with content drafted and refined using large-language-model support and then reviewed by NGO facilitators before release. Teachers used the chatbot for roughly 30 minutes of guided daily practice over one week.

A mixed-methods evaluation compared the chatbot against the NGO's existing online-form training route, drawing on a bilingual (English/French) pre-test (n=40), WhatsApp interaction logs (n=47), paper post-training surveys of 47 teachers (39 female, 8 male) across six private schools, six school-based group discussions, and 14 follow-up interviews. The chatbot scored significantly higher than the form on usability (7.82 vs 7.33, p=.046, d=0.37) and on a combined usability-and-experience measure (7.41 vs 7.03, p=.044, d=0.32); the difference on learnability was smaller and not statistically significant (7.00 vs 6.76, p=.212).

The evaluation is candid about constraints: 87.5% of teachers owned a personal smartphone and 77.1% used WhatsApp daily, but prepaid data costs and intermittent network coverage disrupted use — one teacher noted "the only difficulty is the network." Because the training content was delivered in English, the 39.6% of teachers who preferred French were partly excluded. The pilot covered only six private schools over a single week, so it measures teacher-reported usability and engagement, not verified classroom or student-learning outcomes, and offers no evidence yet on sustained use or public-school scalability.

Read the full analysis: https://chatac.ai/