Randomization
Schools were used as units for randomization into intervention and control groups. A total of four schools were randomized using stratified cluster randomization. Stratification was made by climatic condition/types of pulses commonly produced, and thus two geographic areas were formed. Two schools were then selected from each geographic area or stratum. The schools were purposively selected in such a way that they are reasonably far apart from each other. The two schools from each stratum were finally randomized into the intervention and control groups using an envelope. Each stratum/geographic area was made to have one intervention and one control school/cluster. Individual participants were then recruited using a systematic random sampling method. Study participants from the intervention schools were intervention recipients, while study participants from the control schools continued with their usual dietary practice.