The United States has approximately 55 million students in grades K-12. On average, teachers administer 100 teacher-generated tests per school year, which translates into America's students taking approximately 550 million--that's 550,000,000--teacher-generated tests per year. Taking this extraordinary number into consideration, it should be clear that an understanding of testing is essential for teaching practitioners throughout all grade levels and subject areas. If you are a teacher, you need
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