从SSAT的官方网站解释是：The SSAT is a multiple-choice test that consists of verbal, quantitative (math), and reading comprehension sections. The Middle Level SSAT is for students currently in grades 5-7; the Upper Level SSAT is for students currently in grades 8 and above. The Middle and Upper Level SSATs share the same format and timing, and both provide admission officers with an idea of your academic ability and "fit" in their schools. http://www.ssat.org/test/test-levels-middleupper
