Bruce Baker has studied Newark charters repeatedly. As he shows in this post, their greatest success is their ability to skim the students who are most likely to succeed. Some if his findings about their academic growth–or lack thereof-may surprise you.

Charters are parasites, he concludes, that harm their host. Making the entire district charter does not change that:

“But sadly, those who most vociferously favor charter expansion as a key element of supposed “portfolio” models of schooling appear entirely uninterested in mitigating parasitic activity (that which achieves the parasites goal at the expense of the host. e.g. parasitic rather than symbiotic). Rather, they fallaciously argue that an organism consisting entirely of potential parasites is itself, the optimal form. That the good host is one that relinquishes? (WTF?) As if somehow, the damaging effects of skimming and selective attrition might be lessened or cease to exist if the entirety of cities such as Newark were served only by charter schools. Such an assertion is not merely suspect, it’s absurd.”