State education officials and advocacy groups came to blows this week over a last-minute proposal that could allow some charter schools to hire uncertified teachers with as little as 30 hours of classroom experience.The proposal, which would allow high-achieving charter schools to develop their own teacher certification requirements, was quietly floated in the last hours of the 2017 legislative session and appeared this week on the agenda for an emergency meeting of the SUNY board of trustees' charter school committee, convened three days after public notice was first issued during a holiday week.