Learn more about the benefits of early childhood education from
these resources:

Summary of Scholarly Articles:

Routledge: Early childhood policies in low- and middle-income countries

Additional Articles:

Mindshift:

https://www.kqed.org/mindshift/49205/why-preschool-is-the-most-important-year-in-a-childs-development

NEA: 

http://www.nea.org/home/18226.htm

Brookings Institute: 

https://www.brookings.edu/opinions/does-pre-k-work-or-not/