References

School children
[1] Endres, C., & Cidade, M. (2015). Federal data summary: School years 2011-12 to 2013-14. Greensboro, NC: National Center for Homeless Education.

[2]  M., Brown, S. R., Wood, M., & Gubits, D.  (2016)  Housing and service interventions for families experiencing homelessness in the United States:  An experimental evaluation.  European Journal of Homelessness, 10 (1), 13-30.  http://www.feantsaresearch.org/IMG/pdf/10-1_article_1.pdf

Annual estimate

[3] The 2016 Annual Homeless Assessment Report (AHAR) to Congress Part 1:  Point-in-Time Estimates of Homelessness.published November, 2016.
https://www.hudexchange.info/resources/documents/2016-AHAR-Part-1.pdf

[3] The 2016 Annual Homeless Assessment Report (AHAR) to Congress Part 2: Estimates of Homelessness in the United States published October 2016
https://www.hudexchange.info/onecpd/assets/File/2015-AHAR-Part-2.pdf