These successes and failures have underscored the need to aim high and embrace change in America's schools. Our goal as a nation should be to ensure that 80 percent of our students graduate from high school fully ready to attend college by 2025. This goal will probably be more difficult to achieve than anything else the foundation works on, because change comes so slowly and is so hard to measure. Unlike scientists developing a vaccine, it is hard to test with scientific certainty what works in schools. If one school's students do better than another school's, how do you determine the exact cause? But the difficulty of the problem does not make it any less important to solve. And as the successes show, some schools are making real progress.
Based on what the foundation has learned so far, we have refined our strategy. We will continue to invest in replicating the school models that worked the best. Almost all of these schools are charter schools. Many states have limits on charter schools, including giving them less funding than other schools. Educational innovation and overall improvement will go a lot faster if the charter school limits and funding rules are changed.
One of the key things these schools have done is help their teachers be more effective in the classroom. It is amazing how big a difference a great teacher makes versus an ineffective one. 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.
Whenever I talk to teachers, it is clear that they want to be great, but they need better tools so they can measure their progress and keep improving. So our new strategy focuses on learning why some teachers are so much more effective than others and how best practices can be spread throughout the education system so that the average quality goes up. We will work with some of the best teachers to put their lectures online as a model for other teachers and as a resource for students.
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