'Studies like those by Gordon Lafer have demonstrated the high cost that charters impose on public schools, which are left with stranded costs when students leave. “It’s time to invest in our existing schools,. This unregulated growth is something that affects the long-term sustainability of the district.! This is about protecting the civic institution of public education.” The history of school segregation in the South shows the wastefulness of maintains a dual school system with both receiving public funds. Now charters are an issue in L.A. where the funders use them to eliminate the teachers’ union. The L.A. teachers union called for a cap on charter schools even though charters are not a major topic in stalled negotiations with the school district. Charters remain at the heart of a deeper conflict involving the union and backers of these non-traditional, mostly non-union school.'