Targeting C1 CEFR — scored 78% on practice, is that enough to feel confident?
I've been preparing for the C1 level CEFR assessment for about 11 weeks, targeting the Cambridge C1 Advanced exam specifically. My native language is Polish and I've been using English professionally for 6 years, but formal exam prep is a different beast from daily work communication. My practice scores have been hovering around 78-82% overall, with reading and listening being my strongest sections and writing being the one that kills my average.
The writing section is genuinely difficult — not because of grammar or vocabulary, but because C1 writing requires a level of register control and rhetorical sophistication that doesn't come up much when you're writing emails or reports. I've been doing about 3 practice essays per week and getting feedback from a language tutor who charges £50 per hour. Two sessions a month has helped more than any app or self-study approach I tried.
I worked through a cefr exam practice set last week that covered all four skills in timed conditions and finished at 76% — a bit lower than my untimed average, which is expected but still a little concerning. The use of English section specifically — the open cloze and key word transformation tasks — always dips my score below where I want it to be.
For anyone who's passed C1 recently: did you find the real exam harder or easier than the Cambridge official practice papers? And how much does the speaking section actually differentiate between B2 and C1 level candidates?
Key word transformation is pure memorization of phrase patterns — there's a finite list of structures they test. I spent 3 days just drilling those patterns and my score on that subsection went from 55% to 85%. Worth the focused time.
The speaking section differentiation is real. Examiners at C1 are specifically listening for discourse management — how you structure extended responses, whether you can repair misunderstandings, how you use cohesive devices. It's not just vocabulary range.
If you're comfortable elaborating on abstract topics for 2+ minutes without planning time, you're probably at C1 level already.
78-82% on practice papers is definitely in the safe zone for C1. The real exam felt similar in difficulty to the Cambridge official papers in my experience — some people say it's slightly easier, which I think is because the stakes make you focus better than casual practice.
Polish speaker here too, passed C1 last year with 79% overall. Writing was also my weakest. My tutor's biggest tip was to write the intro and conclusion first, then fill in the body — it forces register consistency throughout. Sounds basic but it actually works.
I passed C1 Advanced in March and had almost the exact same score going in — honestly 78% is solid, but the number that matters more is where those points are dropping. For me it wasn't vocabulary or reading, it was the Use of English part 4 (the key word transformations) that kept killing my mock scores until I drilled those specifically for two weeks. Once I understood the patterns, everything clicked.
One thing that genuinely helped me was getting the underlying level logic clear in my head — not just "I'm preparing for C1" but actually understanding what distinguishes C1 from B2 in terms of what examiners expect. I spent an evening on a cefr levels explained breakdown and it changed how I approached the writing tasks specifically. You've got 11 weeks of prep behind you, that's not nothing. Go find your weak spot and own it.
I failed C1 Advanced first time with a similar practice score, so I'll be honest with you -- 78% sounds good but it depends a lot on WHERE those points are coming from. My issue was that I was acing reading and use of English but completely falling apart in the Writing and Speaking parts, which dragged my overall profile down. The exam doesn't just average everything out; you need to hit a threshold in each paper separately, and that caught me off guard.
Second attempt I stopped doing full mock tests and started drilling the specific formats obsessively -- the Cambridge essays have a very particular structure they want to see, and it wasn't something I'd picked up from professional English use. Your work background will help you in Speaking for sure, but I'd really check whether your 78% is balanced across all four skills or if it's hiding a weak spot. Eleven weeks is solid prep, just make sure you're not going in blind on Writing.
78% is solid, but honestly the score matters less than what you do with the wrong answers. I was in a similar spot around week 9 and made myself sit with every mistake until I could explain exactly why the wrong options were wrong, not just why the right one was right. That shift changed everything for me. If you haven't already, check out the cefr levels explained page, it helped me understand what C1 is actually testing so I could stop guessing and start reasoning through questions.
The Polish to English jump at C1 is tricky because the exam loves subtle register differences and you've probably built intuition from professional English that doesn't always match academic or literary usage. It's worth drilling the Use of English section specifically with that in mind. You're close, just don't let confidence from the score replace understanding why things work the way they do.
Just want to jump in with a quick update since I'm in a similar spot. I hit 81% on my last Cambridge C1 Advanced practice paper last week, up from around 74% two weeks before that, so the progress can come fast once things click. I've been finding the Use of English sections the trickiest, but honestly reading through the cefr levels explained breakdowns helped me understand what C1 actually demands versus just guessing at it.
To answer your question, 78% feels solid to me as a baseline but it really depends on which parts are dragging you down. I'm sitting the real exam in mid-October and my tutor says consistent scores above 75% across all four skills is what you're aiming for, not just an average. You've got 11 weeks of prep behind you which is no joke, so trust it.
I failed my first C1 attempt with an 82% practice average, so don't let the number fool you. What killed me was the writing section — I kept producing grammatically correct but weirdly lifeless essays that hit the word count but missed the register. Second time around I stopped drilling grammar and spent most of my prep actually reading Cambridge examiner reports and model answers to understand what "C1 quality" really means. It's a style thing as much as an accuracy thing.
78% is a decent foundation but it depends where those points are coming from. If your reading and listening are pulling the average up while writing or speaking lag behind, that's the gap that'll hurt you on the day. I'd say run a timed full mock under real conditions — no pausing, no dictionary — and see if the number holds. That honest self-test was more useful to me than any coursebook.