Equally worrisome is that today's assessments emphasize narrow skill sets such as geometry and grammar, and omit huge chunks of what educators and business leaders say is essential for modern students to learn: creative thinking, problem solving, cooperative teamwork, technological literacy, and self-direction. Yet because NCLB has made accountability tests the tail that wags the dog of the whole education system -- threatening remediation and state takeover for schools that fall short -- what's not tested often isn't taught.