Is it possible to qualify for tuition assistance at the private school? I'd try that first.
Perhaps a Montessori-leaning preschool would be a choice for his upcoming year if he's not allowed early entrance to K.
We placed our son (6) in a private school for Kindergarten. The school has assistance for those who aren't able to pay. We were able to swing the tuition, so didn't need the assistance, but the parents that did were obviously of a caliber that went the extra mile for their child's education. It was a good place for him because they were flexible on his reading and math assignments, yet he was able to work with other kids his age on writing-his challenge subject.
This upcoming year, he's going to the free public charter school. It's a blended-grade learning environment. They allow for placement in every subject at the child's actual level, so we fully expect him to be seated next to a 10 year old for math.
Maybe there's a public charter school nearby that will accept him early? If not, it's something to think about for the 2014-2015 school year...especially if there is a lottery for entrance.
