The Common European Framework of Reference for Languages (CEFR) is the most widely used system for describing language proficiency. It has six levels, from A1 (absolute beginner) to C2 (mastery). Many language tests, courses, and resources reference these levels.
They are roughly exponential (B1 is twice the level of A2, which is twice the level of A1), which is why the requirements seem to jump so much in B and C levels.
A1 — Breakthrough: Can understand and use basic phrases. Can introduce yourself and ask simple questions. Roughly corresponds to Refold Phase 1.
A2 — Waystage: Can understand sentences about familiar topics (shopping, family, work). Can communicate in simple, routine tasks. Roughly corresponds to early Phase 2.
B1 — Threshold: Can understand the main points of clear speech on familiar topics. Can handle most travel situations. Can write simple connected text. Roughly corresponds to late Phase 2 / early Phase 3.
B2 — Vantage: Can understand the main ideas of complex text. Can interact with native speakers without strain for either party. Can write clear, detailed text on a wide range of subjects. Roughly corresponds to Phase 4-5.
C1 — Effective Operational Proficiency: Can understand a wide range of demanding, longer texts. Can express ideas fluently and spontaneously. Can use language flexibly for social, academic, and professional purposes. Roughly corresponds to Phase 6.
C2 — Mastery: Can understand virtually everything heard or read. Can summarize information from different sources. Can express themselves very fluently and precisely. Roughly corresponds to Phase 7.
The mapping above is approximate. Refold phases don't correspond perfectly to CEFR levels because they measure different things. CEFR measures what you can do with the language across all skills. Refold phases focus on specific skill-building sequences. A Phase 3 learner might have B2-level reading comprehension but A2-level speaking ability — which is expected and fine in the Refold method, since speaking comes later.
Not really, unless you're preparing for a proficiency test or need a certification for work/study. The Refold roadmap gives you more specific, actionable guidance than a CEFR level ever could. But knowing roughly where you fall can be useful for finding resources or communicating your level to others.