Article History
First Online: 20 March 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Permission for the study was granted by the provincial government (SSA/TT/2018, dated March 22, 2018), which arranged for all school-level permissions, and communicated the purpose and procedures of the study to the heads of the selected schools, the selected teachers and administrators. The students who responded to the surveys were briefed by their teachers and the administrators and then invited to participate in the study. The participation of the schools, teachers and children in the study was optional, but no school, teacher or child refused to participate. The data used for the analysis is available at ExternalRef removed.