It won't help.
You have to understand where Shapiro is coming from. The "Robin Hood" property tax transfer is killing Plano and the surrounding areas that Shapiro represents.
The state is redistributing so much of the property taxes collected in Plano, that Plano doesn't have enough money to fund their own schools (which are still filling up with students).
A few years ago, Plano hit the state-mandated cap on property taxes -- i.e. they couldn't be raised any higher to make up the shortfall caused by the redistribution to other school districts. There was some legislation proposed in 2001 to address the problem, but I lost track of what happened.