"The McKinney-Vento Act is designed to address the challenges that homeless children and youths have faced in enrolling, attending, and succeeding in school. This particularly vulnerable population of children has been increasing; from the 2006-2007 school year to the 2013-2014 school year, the total number of homeless children and youths approximately doubled from 679,724 to 1,301,239 students, according to EHCY program data. Under the McKinney-Vento Act, State educational agencies (SEAs) must ensure that each homeless child and youth has equal access to the same free, appropriate public education, including a public preschool education, as other children and youths. Homeless children and youths must have access to the educational and related services that they need to enable them to meet the same challenging State academic standards to which all students are held. In addition, homeless students may not be separated from the mainstream school environment. SEAs and local educational agencies (LEAs) are required to review and undertake steps to revise laws, regulations, practices, or policies that may act as barriers to the identification, enrollment, attendance, or success in school of homeless children and youths."
Taken from Education for Homeless Children and Youths Program Non-Regulatory Guidance.