Here’s a blog post from Duolingo about how DET test takers benefit from the free practice test accessed via the DET website. Remember that this test is generated by AI, so it is different every time a test taker accesses it. As a result, they enjoy an unlimited number of free practice tests.
The blog notes that according to research, “test takers who took more practice tests reported higher confidence levels when taking the official test. They also felt more prepared and motivated compared to those who took fewer or no practice tests.”
Yeah, no kidding.
Much has been written about the meteoric rise* of the DET. Various factors are mentioned – the cost, the length, the at-home format, the green owl (RIP), the item types, engagement with admissions staff – but I don’t think enough credit has been given to the free practice test.
Historically, students preparing for legacy English tests have spent a ton on test prep. A significant amount of that spending goes to the test makers themselves. A quick glance at the Pearson site reveals that they offer scored PTE practice tests for $35.99 a pop (or buy five at a time for a discount). ETS charges $45.95 for the same (ever unable to curate its offerings, ETS still sells dozens of separate test prep products). Some students spend hundreds of dollars on this kind of stuff.
Duolingo’s choice to give unlimited mock tests away for free makes the DET an attractive proposition.
We take it for granted that testing companies are also test prep companies. But it hasn’t always been this way. For decades, ETS didn’t offer any paid prep products at all. Whatever prep they provided was given away at no cost. Moving into the test prep space was a choice.
Nowadays, test makers go whole hog with coupons and sales worth five or ten bucks… but when we consider the ancillary costs including (but not limited to) test prep, those marketing efforts seem pretty inconsequential.
I spent years begging my friends at ETS to provide a practice test similar to the one provided by Duolingo. But my friends all took buyouts last year and I’m too tired to start begging anew. Seriously, though – this is the sort of decision test firms should emulate to help ensure their long term viability.
*actually, the rise was slower than you think