Completion rates were

You will almost always see this phrase followed by an adjective or a specific percentage. Common partners include disappointing, impressive, steady, or lower than expected. Because rates is plural, you must use were to keep your grammar police friends happy. You use it when looking backward at a finished event or a specific period of time. It acts as the anchor for your data reporting. For example, Completion rates were highest among the younger demographic. This tells us exactly who was most dedicated to the task. It is a very sturdy, reliable phrase that does not leave much room for guessing.

This phrase lives in the 'Formal' to 'Very Formal' neighborhood. You probably won't use it while texting your best friend about finishing a pizza—unless you are being incredibly sarcastic. It is the language of whiteboards, PDF reports, and Zoom presentations. It belongs to the world of Academia and Corporate Strategy. Think of it as wearing a digital suit and tie. It is professional, detached, and authoritative. However, in the age of big data, even YouTubers and TikTok creators use it when discussing their analytics. It is becoming the universal language of the 'Attention Economy'.

In the world of online learning, like on Coursera or Udemy, Completion rates were often hovers around 5-10%. That sounds low, right? But that is the standard! In a clinical trial for a new medicine, researchers might report that Completion rates were exceptionally high, meaning almost everyone finished the treatment. On a more modern note, a social media manager might say, Completion rates were boosted by the new interactive stickers. This means people actually watched the whole Instagram Story instead of swiping away to look at cat memes. It turns abstract human behavior into a measurable statistic.

Use this phrase when you are presenting results. It is perfect for a monthly review at work or a university thesis presentation. It is also great for when you want to sound like you really know your data. If you are writing a formal email to a client explaining why a survey didn't get enough responses, this is your go-to expression. It shifts the focus from "people didn't like it" to "the data shows the completion rates were low." It makes your argument sound objective rather than emotional. It is also useful in journalism when reporting on government programs or social initiatives.

Do not use this for personal, one-on-one activities. If you ask your partner if they finished the laundry, do not say, "What were the completion rates of the washing cycle?" You will likely get a very confused look or a pillow thrown at you. Also, avoid using it for things that don't have a clear 'end'. You wouldn't talk about the completion rates of 'happiness' or 'friendship'. These are ongoing states, not tasks with a finish line. It is for discrete, measurable events only. Using it in casual conversation can make you sound like a robot that accidentally wandered out of a Silicon Valley office.

One of the biggest traps is the subject-verb agreement. ✗ Completion rates was low → ✓ Completion rates were low. Remember, rates is plural! Another mistake is confusing it with 'success rates'. ✗ The completion rates were 100% because everyone passed → ✓ The completion rates were 100%, and the success rates were also high. You can finish a test (completion) but still fail it (success). Don't mix them up! Also, avoid saying ✗ The finish rates were. While people will understand you, it sounds 'off' to a native speaker. Stick to completion to keep that C1-level polish.

If you want to spice things up, you can use Retention rates were. This is similar but focuses on people staying in a program over a long time. For a more casual office vibe, you might hear The turnaround was. In tech, people often say The drop-off was, which is the opposite—it tracks who quit! You might also see Final engagement figures were. If you are writing a very academic paper, you might use Participant adherence was. These all circle the same idea but change the 'flavor' of the sentence depending on your industry.

Is this phrase only for business? Mostly, yes. It is a technical term used for reporting data. You might see it in news reports about education or health, but it is rarely used in fiction or casual storytelling. Can I say completion rate was? Yes, if you are talking about one specific rate. For example, The completion rate for the first task was high. Use rates (plural) when you are comparing multiple groups or time periods. Is it okay for an IELTS essay? Absolutely! It is a high-level academic phrase that will impress any examiner looking for sophisticated data description.