Massive federal education competitions like the $650 million Investing in Innovation fund have heightened interest in practical education research, but even the most promising findings aimed at improving student learning face a long, uncertain path to become something more concrete and usable for the classroom. Unlike fields such as physics or…

The author reports findings from a federal study of 77 middle schools which suggest that even intensive, state-of-the-art efforts to boost teachers' skills on the job may not lead to significant gains in student achievement right away. The "Middle School Mathematics Professional Development Impact Study," which was released in April, is the second…