Standard theories don’t explain this meager progress. Too few teachers? Not really. From 1970 to 2008, the student population increased 8 percent and the number of teachers 61 percent. The student-teacher ratio has fallen sharply, from 27-to-1 in 1955 to 15-to-1 in 2007. Are teachers paid too little? Perhaps, but that’s not obvious. In 2008, the average teacher earned $53,230; two full-time teachers married to each other and making average pay would belong in the richest 20 percent of households (2008 qualifying income: $100,240). Maybe more preschool would help. Yet, the share of 3- and 4-year-olds in preschool has rocketed from 11 percent in 1965 to 53 percent in 2008.<\/p>\n
“Reforms” have disappointed for two reasons. First, no one has yet discovered transformative changes in curriculum or pedagogy, especially for inner-city schools, that are (in business lingo) “scalable” — easily transferable to other schools, where they would predictably produce achievement gains. Efforts in New York City and Washington, D.C., to raise educational standards involve contentious and precarious school-by-school campaigns to purge “ineffective” teachers and principals. Charter schools might break this pattern, though there are grounds for skepticism. In 2009, the 4,700 charter schools enrolled about 3 percent of students and did not uniformly show achievement gains.<\/p>\n
The larger cause of failure is almost unmentionable: shrunken student motivation. Students, after all, have to do the work. If they aren’t motivated, even capable teachers may fail.<\/p>\n