There is always likely to be a struggle between classroom realities and ministerial ambitions, egged on by an insatiable media demanding that "something be done". It is a remarkable revelation that Labour in England has introduced 650 initiatives on the basics since it came to power, yet there has been little impact at all on literacy standards.
Research takes time and its conclusions may be unclear. It is the job of ministers to take the decisions. But they ought at least to be well-grounded and based on the evidence.