*2.4. Ethical Approval*

Approval for conducting the study was granted by the National Commission for Science, Technology and Innovation (NACOSTI) in Kenya, under permit number NACOSTI/P/1981086/28440. Permission was also granted by the education sections of all the participating counties and the head teachers of each of the 50 schools. Informed consent was also obtained from the respondents, whose participation was voluntary after assurances of anonymity and confidentiality.
