Here is an elementary school on Capitol Hill that has been socio-economically integrated for several decades. It now stands at around 40% of the students eligible for Free and Reduced Meals.
The absolutely shocking achievement gap shows little educational benefit accruing to the poor ( or numerous middle class AA ) in the school,
The percentage of white students scoring proficient or advanced in math and reading is in the high 90s. Surpassing the district average for white students
The percentage of students eligible for FARM scoring proficient is exactly average for the district as a whole: mid-40s
The percentage of black students, including many middle class families, is just a touch above the district average: around 50%
http://profiles.dcps.dc.gov/pdf/2013_Equity_Report_DCPS_External_Watkins%20Elementary%20School.pdf
I would look for more robust evidence of the EDUCATIONAL benefits of some big changes to assure socio-economic integration in elementary schools before supporting any such plan for DCPS.