DES MOINES — The Iowa House approved a sweeping education policy bill Thursday that, if it becomes law, could have a $12 million impact and delay state income tax cuts previously adopted by lawmakers. House File 847 would expand the Tuition and Textbook Tax Credit by doubling the allowed expense to $2,000 for each qualified student and extending the credit to home-schooled students.It was approved 62-33 — with five Democrats, including House Minority Leader Todd Prichard, D-Charles City — joining Republicans.