It is expected that one student on average will be unable to successfully complete a given class series. Enrollment procedures will be adapted if necessary. As per our "intent to treat" approach (see below), children will be included in primary analyses irrespective of adherence to protocol (i.e., attendance). However, children may be requested to leave the class if their absence becomes disruptive. In total, we anticipate a minimum of 18 participants completing the training out of a total of 21 children enrolled.