The excerpt does not explain what learning outcomes the walls are expected to produce, how they function in classrooms, or what measurable change they aim to achieve. The available detail is too thin to establish a concrete mechanism.
Most affected
Students in Malda's 3,000 government schools — Exposure to visual learning aids on alphabet and astronomy topics during school days.
Likely next
Whether student learning outcomes or attendance in participating schools change measurably over the next academic year.