The goal of this clinical trial is to learn if the adapted mhGAP intervention guide (mhGAP-IG) can improve quality of child mental and behavioral disorders (CMBDs) services in China. It will also learn about the implementation of the mhGAP-IG delivered by kindergarten teachers. The main questions it aims to answer are:
* Does the adapted mhGAP-IG reduce the symptom severity among children with CMBDs between two and sis years old?
* Does the adapted mhGAP-IG reduce psychological distress among caregivers of children with CMBDs?
* Does the adapted mhGAP-IG improve mental and behavioral health serivces capacity among kindergarten teachers in China?
* How is the feasibility, acceptablity, and what are barriers and facilitators of implementation?
Researchers will compare the adapted mhGAP-IG to child healthcare as usual to see if the adapted mhGAP-IG can improve quality of child mental and behavioral disorders services in China.
Participants (kindergarten teachers) will:
* Complete questionnaires and scales at baseline and at 3-, 6-, 9- and 12- months of intervention;
* Receive mhGAP-based trainings;
* Deliver long-term child mental and behavioral disorders services (including screenings, referals, follow-up, and physcosocial interventions) to children with CMBDs.
Participants (children/caregivers) will:
* Complete questionnaires and scales at baseline and at 3-, 6- and 12- months of intervention.
* Accept long-term CMBDs management (including screenings, referals, follow-up management, and physcosocial interventions) from mhGAP-trained kindergarten teachers.