So why are PPTA and NZEI against this possibility?

The various teacher unions oppose Charter Schools. Yet they cannot produce a single piece of evidence other than blind ideology to oppose them.

Whereas evidence around the world is building that Charter Schools work and traditional union dominated schools do not:

New York City recently released official progress reports for the city’s 1,230 schools, including measures of how each school compares with other schools that have similar students. The reports provide yet more proof that charter schools?which outperformed traditional public schools by a wide margin?are working. Eight of the top 11 elementary and middle schools by student performance are charters, and four of those charters are in Harlem.

?Perhaps they oppose them because they don’t want their closed shop mediocracy exposed?