The Administration's "Blueprint For Reform," and FY 2011 budget proposal set forth an education agenda that would make the expansion of charter schools a cornerstone of the reauthorized Elementary and Secondary Education Act (ESEA). Likewise, HR 4330 would promote charter schools as a central catalyst for education reform. Without clearer guidelines, charter school expansion could exacerbate racial and socio-economic isolation, and would also miss an opportunity to promote diversity. The recommendations presented in this paper urge Congress to pair federal support for charter school expansion with incentives that would create and sustain racially, economically and linguistically diverse charter schools; safeguards to ensure that the civil rights of all children are protected; and funding increases that would provide for the expansion or replication of effective, diverse magnet school models. (Contains 25 endnotes.)