It seems like you think republicans have a pretty good appeal to black voters. Have republicans ever made an effort to get this message to blacks? Why hasn't it been successful?
1. Yes, of course they have.
2. Don't know, but I would speculate that it is because Democrats have done such an effective job pushing the victimhood/entitlement drug over the decades. There are obvious individual exceptions (e.g., the folks I named above and many, many more), but unfortunately, the black population as a whole, as a voting demographic, appears to have long since gone over the tipping point due to poor education, fatherless family structure, and dependency on welfare. Americans as a whole may be headed down the same road, which is obviously very troubling.
Do republicans have any solutions to improving education beyond "school choice"? I think improving on that message would be a good first step.
First,
at the thought that the black demographic is somehow on the fence and is just waiting for Republicans to offer a better message on
improving education. The Democrats quite publicly killed the DC voucher program (it was even reported somewhat fairly by most media outlets), and I would bet you that a good 99% of black DC residents continue to vote Democrat.
Second, poor eduction is mostly the result of the breakdown of the family. If kids don't have role models and a home environment conducive to learning, they're at a massive disadvantage. Republicans understand this, and also understand that simply throwing money at the problem solves nothing. But if Republicans say this, "they have no solutions."
Republicans have offered many solutions to improving education. In addition to giving kids an opportunity to get out of shitty schools with vouchers, Republicans have also advocated for getting rid of shitty teachers by breaking up unions and their "RIF lists", making it easier to fire them, etc. Scott Walker was a big proponent of this, and the Democrats staged a recall election in response.