PETS 1, English level 1, the most elementary. It is also the lowest level, generally simple English, with a vocabulary of about 1000, a junior high school level, and generally simple everyday and communicative terms.

PETS2, CET-2, a little higher than CET- 1, still belong to the primary level. The vocabulary is 2000-3000, which is probably high school level. After passing the second grade, you don't have to take English one.

PETS3, English level 3, belongs to the intermediate level, with a vocabulary of about 4000, which is equivalent to the undergraduate level of ordinary universities and CET-4. Of course, many officials will explain that it is probably between Grade 4 and Grade 6. After the third grade, you can take English II and English I without taking the test.

PETS4, level 4, belongs to the upper-middle level, with a vocabulary of about 6000, which is equivalent to a master's degree. You can also consider level 6. Reading and writing are more important, mainly depending on the application level and test difficulty. It is generally considered to be greater than level 6.

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