Dear Arne Duncan: You are off to a great start as President Barack Obamaâ??s high-impact education secretary. Keep on pushing Wisconsin and other states to improve and reform public education in bold ways. We welcome you back to Madison on Saturday for spring commencement ceremonies at UW-Madison, where youâ??ll deliver a morning address at the Kohl Center…Keep pressing for more accountability, higher standards and greater innovation in education here in Wisconsin and across the nation.