PETS 1, public 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, the second level of public English, is a little higher than the first level and still belongs 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, public English level 3, belongs to the intermediate level, with a vocabulary of about 4000, which is equivalent to the undergraduate level and CET-4 level of ordinary universities. 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, PETS-4, belong to the upper-middle level, with a vocabulary of about 6000, which is equivalent to a master's degree, and can also be considered as CET-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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