The SAT essay has a complicated history. For many years, students were able to submit essay scores from the College Board, which oversees the SAT, through what are now known as SAT Subject tests (a program separate from the main SAT). In 2005, the main SAT was revised to include a required essay section, and the scale for the total test changed to a maximum score of 2400. In 2016, the main SAT was overhauled again. The maximum score reverted to 1600, and the 50-minute essay section was made separate and optional from the three-hour main test.