TALLAHASSEE — Nationally celebrated education reformer Tony Bennett was wooed to Florida in January to bring stability to the state Education Department.Months later, his tenure as education commissioner could be in trouble.Emails obtained by the Associated Press suggest that Bennett, while serving as education commissioner in Indiana last year, intervened to raise the grade for a charter school run by an influential Republican donor. Bennett was already under fire in Florida, where influential superintendents and state Board of Education members have raised questions about the validity of school grades.Gov. Rick Scott declined two opportunities to speak publicly on the matter Tuesday, saying he had not read the AP report.But with the 2014 governor's race looming, observers say Scott has a tough decision to make."If the governor wants to appeal to moderates across the state, he has to get rid of (Bennett)," said Brian Peterson, a professor at Florida International University and editor of the Miami Education Review newsletter. "If he doesn't, the message is that the game is rigged, and that public schools are going to be treated differently from charter schools."On Tuesday, Bennett said he had received "really pretty strong support" from Scott's office and several lawmakers, as well as members of the state Board of Education. The seven-person board has the power to hire and fire education commissioners, but its members are appointed by the governor.Bennett said the AP report would not affect his ability to serve as top education official.According to the report, Bennett tinkered with Indiana's school grading system last fall to improve the grade awarded to Christel House Academy. Emails show staff members questioned whether the move was legal."It was never about making charter schools look good," Bennett said Tuesday.Instead, Bennett said he changed the grade for Christel House from a "C" to an "A" because the school was docked points for not having a graduation rate. That year, Christel House only enrolled students in kindergarten through 10th grade.Those who came to his Bennett's defense Tuesday included Patricia Levesque, the executive director of former Gov. Jeb Bush's Foundation for Florida's Future. Bush has been among Bennett's most ardent supporters.Senate President Don Gaetz and House Speaker Will Weatherford, both Republicans, also praised Bennett's record and said speculation would be premature.Stability is key for Scott, who has had three education commissioners and two interim education commissioners during his 31 months in office.Bennett began in January, after losing re-election to his post in Indiana. Unlike Indiana, Florida appoints its top education official.Bennett's application came as a relief. The state education board had received few credible applications for its top job, which became vacant in August.Gerard Robinson, who had come to the state just a year earlier, resigned abruptly after having several high-profile problems with school grades and standardized testing. Bennett already has had challenges in his short tenure. Earlier this summer, he urged the board of education to preserve a "safety net" to protect schools from dropping more than one letter grade in light of changes to the grading formula. The board approved his recommendation, but members on both sides of the debate conceded that school grades had become less meaningful.Board member John Colon said Bennett's woes in Indiana, while unfortunate if true, would not influence his views of the commissioner's role in Florida."I'm judging Commissioner Bennett on what he's doing, not what I'm hearing," said Colon, a Sarasota financial adviser who joined the board after Bennett was appointed.Board member Kathleen Shanahan said she, too, would continue to support Bennett.But Rick Hess, an education policy scholar with the American Enterprise Institute, said Bennett might not get full-throated support from the Republican Party leaders who once considered him a top education reformer.The reason? Bennett has championed the Common Core State Standards, a new national curriculum that will be deployed in Florida schools over the next two years. Tea party groups vehemently oppose the concept."It's not at all clear that they're going to want to stand behind Bennett," he said. "More likely, they're going to look for an opportunity to push out Bennett in favor of a state chief who is not such a supporter of the Common Core."Times/Herald staff writer Steve Bousquet contributed to this report.