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1600.io provides multi-dimensional synchronous and asynchronous online instructions for SAT through a pay-as-you-go membership model. In 1600.io, Yale graduates and elite mentors cover more than 3,000 practical SAT questions in more than 250 hours of video instruction. Through this simple process, students will learn how to master the types of reading, writing, and math problems encountered, and absorb expert advice to solve their problems more quickly, thereby saving time and reducing errors, thereby This in turn leads to better scores. Students can also use this process to identify their areas of weakness, and then they can watch their focused videos and learn effective ways to tackle themes that challenge them, turning these weaknesses into strengths.