Nicholas Kristof:

In the letter, Mr. Gates goes out of his way to acknowledge setbacks. For example, the Gates Foundation made a major push for smaller high schools in the United States, often helping to pay for the creation of small schools within larger buildings.
“Many of the small schools that we invested in did not improve students’ achievement in any significant way,” he acknowledges. Small schools succeeded when the principal was able to change teachers, curriculum and culture, but smaller size by itself proved disappointing. “In most cases,” he says, “we fell short.”
Mr. Gates comes across as a strong education reformer, focusing on supporting charter schools and improving teacher quality. He suggested that when he has nailed down the evidence more firmly, he will wade into the education debates.
“It is amazing how big a difference a great teacher makes versus an ineffective one,” Mr. Gates writes in his letter. “Research shows that there is only half as much variation in student achievement between schools as there is among classrooms in the same school. If you want your child to get the best education possible, it is actually more important to get him assigned to a great teacher than to a great school.”

I could not agree more. Rather than add coaches and layers of support staff, I’d prefer simply hiring the best teachers (and paying them) and getting out of the way. Of course, this means that not all teachers (like the population) are perfect, or above average!
Much more on Small Learning Communities here.
On Toledo’s SLC initiative.