The National Alliance on Mental Illness site is a source of education, advocacy, and support.
NAMI Basics is an education program for parents and caregivers whose children are experiencing mental health symptoms. The Basics course is available online at NAMI Basics OnDemand or in person. Best of all, the course is FREE!
The Centers for Disease Control and Prevention site has a section on Children’s Mental Health. There, you’ll find the quantitative information you’d expect to find on the CDC website (e.g. research, data and statistics, etc.). There are also current articles and relevant information about treatment options, symptoms, etc.