Retaking TestAS: How Much Do Scores Actually Improve?

If your first TestAS attempt didn't hit the score you needed, the instinct is often to repeat the same preparation and hope for a better day. That's usually the wrong move — a retake deserves a different plan, not a repeat of the first one.

You already have data your first attempt didn't

The single biggest advantage of a retake: you now know exactly which subtests, and which item types within them, cost you the most. First-attempt prep is necessarily somewhat general, because you don't yet know your specific weak points. Retake prep can be sharply targeted instead.

Before doing anything else, break down (as precisely as you can reconstruct it) where the first attempt actually went wrong: a specific subtest, a specific item type within it, or a timing problem (not finishing) rather than a knowledge problem (finishing but getting items wrong). These call for different fixes.

Timing problems and knowledge problems need different practice

If you were running out of time rather than getting items wrong when you reached them, more untimed practice won't fix it — you need timed drilling specifically, working the same item types faster without sacrificing accuracy. If you had time left over and still got items wrong, the opposite applies: slow down and practice for accuracy before adding time pressure back.

Conflating these two is one of the most common reasons a retake doesn't improve much — doubling down on the wrong kind of practice.

Don't neglect subtests that went fine

It's tempting to spend 100% of retake prep time on your weakest subtest. Some maintenance time on subtests that went well matters too — skills decay, and a subtest that was solid three months ago isn't guaranteed to still be solid on retake day without any upkeep.

Confirm your registration details again

Format (Digital vs Paper), Subject Module, and test language are all worth re-confirming before a retake, not assumed to be identical to your first attempt — especially if your intended degree or target university changed since then.

Realistic expectations

There's no universally quoted "average retake improvement" figure we can respond with confidently — individual results depend heavily on how targeted the retake preparation actually was, which is the entire point of this post. A retake with genuinely diagnosed, targeted practice tends to outperform one that just repeats general prep — but neither guarantees a specific point improvement, and we won't pretend otherwise with an invented number.

Practice the exact item types for free to start diagnosing where a retake's targeted practice should go.