C2 or Mastery of proficiency -
At this level, the language user is supposed to understand basically anything he/she reads or hears; can summarize information from different spoken and written sources and express him/herself spontaneously, very fluently and precisely.
C1 or Effective operational proficiency or advanced -
At this level, the user is supposed to understand longer and demanding text of wide range and also recognize implicit meaning; express opinion and ideas on a certain topic without searching for expressions; use the language in both social, academic and professional areas; produce clear, well-structured, detailed text on complex subjects.
B2 or Vantage or Upper Intermediate -
In this stage, the user is supposed to be able to understand and communicate on text regarding concrete and abstract subject, to communicate fluently with other native speaker without any stain on either sides.
B1 or Threshold or Intermediate -
At this level, the user is supposed to understand the main points on matter that he/she regularly comes across with at work, in school and other places. The use is supposed to deal with most situation when he travels to areas where that language is spoken. Also, he/she is able to produce simple connected text on familiar topics or personal interest and can describe experiences, events, dreams and give reasons and explanations for opinions and plans.
A2 or Way stage of elementary - At this level, the candidate can understand sentences and frequently used phrases regarding family, shopping, geography and employment. Also, the user can communicate more easily if the communication has a direct and simple exchange of information or on familiar matters.