We recognize the need to help poorer school districts, but the Texas Legislature’s method of recapture seems without rails or publicly known rules. To make matters worse, Gov. Greg Abbott will reconvene lawmakers for a special session that will focus solely on taking more funds from the state’s struggling school districts in the form of private school vouchers, colloquially called “school choice.”

Lawmakers started the “Robin Hood” funding system to help poorer districts with a goal i...