The tests were designed in 1996 as a way to test persons outside of the college and university system; the University of Cambridge Local Examinations Syndicate (UCLES) gave professional and technical support to the development. In 1999 pilot tests of the PETS occurred in several cities. The first mass-offering of the PETS was in 2003.
The testing levels are:
PETS-5: Advanced level, sufficient for studying and/or working outside of China, sufficient for equivalent to an English major at a Chinese university after two years of studying English.
PETS-4: Upper intermediate level, equivalent to that of a non-English major student at a Chinese university after three years of studying English.
PETS-3: Intermediate level, equivalent to that of a non-English major student at a Chinese university after two years of studying English.
PETS-2: Lower intermediate level, equivalent to that of a student entering university in China.
PETS-1: Elementary level, equivalent to completion of three years of English instruction, or what someone would have at the junior high school level.
Liu, Jianda (刘建达; Guangdong University of Foreign Studies). "The Public English Test System" (Chapter 10). In: Cheng, Liying and Andy Curtis. English Language Assessment and the Chinese Learner. Routledge, March 17, 2010. ISBN1135213879, 9781135213879. Start: p. 132.
Notes
↑"首页Archived 2015-03-12 at the Wayback Machine." Quanguo Waiyu Shuiping Kaoshi. Retrieved on March 13, 2015. "全国外语水平考试(WSK)是为了鉴定非外语专业人员的外语水平而设置的考试,其成绩主要用于选拔国家公派出国留学人员。全国外语水平考试设英语(PETS-5)、法语(TNF)、德语(NTD)、日语(NNS)和俄语(ТПРЯ)五个语种。"
↑"English." Public English Test System. Retrieved on March 13, 2015.