The document discusses the Common European Framework of Reference for Languages (CEFR), which provides standardized levels for measuring language proficiency. It outlines three blocks (A1, A2; B1, B2; C1, C2), with A1 being the most basic level of understanding and expression. Level A focuses on everyday expressions, self-introductions, and basic personal information. Level B involves understanding clear written texts and engaging in common situations, as well as producing simple coherent texts. Level C represents proficiency, with understanding of complex texts, expressing ideas fluently and structuring detailed texts. The CEFR also defines the specific capabilities for each level in understanding, speaking, and writing.