Proficiency level refers to the degree of skill or competence an individual has in a specific area, such as a language, sport, or profession. It is often measured using standardized assessments or criteria that categorize abilities into levels, such as beginner, intermediate, and advanced. This helps in understanding where a person stands in their learning or performance journey. In educational settings, proficiency levels are used to tailor instruction and support to meet students' needs. For example, in language learning, Common European Framework of Reference for Languages (CEFR) defines levels from A1 (beginner) to C2 (proficient), guiding educators in developing appropriate curricula and assessments.