Originally Posted by Val
For example, see this report by Reuters about the many ways that charter schools get around it.
To be fair, the Reuters special report also stated
Originally Posted by Class Struggle: How charter schools get the students they want
Many charters, backed by state law, specialize in serving low-income and minority children. Some of the best-known charter networks, such as KIPP, Yes Prep, Green Dot and Success Academy, use simple application forms that ask little more than name, grade and contact information, and actively seek out disadvantaged families. Most for-profit charter school chains also keep applications brief.
Alongside a special report such as this, it may be helpful to see a summary of charter laws by State (similar to information available on the web summarizing such things as gifted legislation by state, homeschool legislation by state, etc).

The Reuters special report was written in 2013... this was under different administration. Time will tell what changes DeVos may make to the US Department of Education, and what changes the US Department of Education may make to DeVos.