Legislators are abandoning plans for a wholesale re-write of the formula which determines how much general state aid schools receive. Senator Don Redfern, a republican from Cedar Falls, is the chairman of the Senate Education Committee. He says the basic formula is one of the best in the country.Representative Betty Grundberg, a republican from Des Moines, is chairwoman of the House Education Committee. She says there are some problems with the way schools are financed — but it’s primarily the fault of the wacky way property taxes are collected. Redfern made his remarks during taping of the Iowa Public Television program, “Iowa Press.”