Tuesday’s election will determine whether Arne Duncan remains as President Obama’s education secretary (Duncan says he wants to stay and Obama has shown no interest in replacing him) or whether Mitt Romney will pick Duncan’s successor — but there’s a lot more at stake for public education when Americans go to the polls, reports the Washington Post. A handful of ballot initiatives in states around the country could spell important changes in public education. Voters are being asked to approve the growth of charter schools and vouchers, to raise taxes for schools, to institute merit pay for teachers and curb their collective bargaining rights, and more…