For those who can get beyond the childish arguments about personalities, and want to debate policy, a main issue seems to be challenges to the traditional public schools models.  See the enlightening history of what happened in New Orleans after Hurricance Katrina for a unique case study.  The summary: the state of LA took over what was a largely entrenched and failing local school district, and replaced traditional public schools and teachers with mostly charter schools free to hire staff of their choosing.  Twelve years later, most kids are doing much better.