What Mock Exam Score Means You're Ready

On a full-length, timed mock exam you're seeing for the first time, about 85% is the score that says "ready." Below 75%, you have focused work to do. In between, the category breakdown — not the overall number — is what decides. The rest of this article is why those numbers are what they are, and why the conditions of the mock matter more than the score it produces.

Start here: the real exam's passing bar is lower than you think

The ARRT Radiography exam is passed with a scaled score of 75 — which is not 75%. A scaled score adjusts for the difficulty of the specific exam version you sat, and ARRT's own published example lands the pass line around 130–131 correct out of 200 scored questions — roughly 65% raw. (The full scoring mechanics are explained here.)

So why aim for 85% on a mock when the real bar is around 65%? Because those two percentages are measured on different rulers.

Practice banks are softer than the real exam

Nearly every practice bank — ours included — is easier than the exam it prepares you for. The phrasing is more familiar, the distractors are a shade more generous, and you're testing in your own environment without the stakes. That gap is real and measurable.

We've measured ours. In our calibration data, a student scoring 79% on first exposure to StudyBucky questions scored 68% on an independent practice exam — an eleven-point gap between our bank and a harder external measure. That offset is built directly into how StudyBucky's readiness score works: the score presents 85 as the goal because that's where bank performance actually corresponds to walking in with a margin, not because we want you overqualified. (It's a small calibration sample so far, and we re-derive it as more students report real outcomes — but every data point we have says the same thing: your mock percentage needs daylight above the real exam's raw cut.)

Aiming at 65% on a practice bank because "that's all the real exam takes" is how students walk into test day with zero margin on a harder instrument. Don't study to the floor.

The conditions matter more than the number

A mock score only predicts anything if the mock reproduced exam conditions. We learned this the hard way: a student can hold a 90 on self-paced practice and still fail the real exam — which is exactly why StudyBucky now refuses to call anyone "on track" until they've completed at least one full-length mock. Self-paced practice, however strong, doesn't test the things exam day tests.

For a mock score you can trust:

• Full-length. 200 questions, or as close as your tool offers. Pacing and mental endurance over nearly four hours are separate skills from content knowledge, and a 25-question quiz measures neither.
• Timed, one sitting. No pausing to look something up, no splitting it across two evenings.
• First exposure. Questions you've seen before are recall of the answer, not the concept. A repeated mock always scores higher and always means less.
• No feedback until the end. Checking rationales mid-exam turns a measurement into a study session. Both are valuable; they aren't the same activity.
• Mixed content in random order — the way the real exam delivers it, not grouped by topic.

A 78% under those conditions tells you more than a 92% under none of them.

Read the category breakdown before the overall score

The overall percentage answers "am I close?" The breakdown answers the more useful question: "what do I do next?"

The exam is blueprint-weighted — Procedures alone is a third of it — so a strong overall score can hide a category that will hurt you badly on test day. A student at 84% overall with Image Production sitting at 60% is not "one point away from ready"; they're carrying a weak quarter of the exam behind a good average. Conversely, a 76% overall with all four categories between 72 and 80 is a genuinely balanced student who mostly needs volume and polish.

Flag any category more than ~10 points below your overall. That's your next two weeks of study, and it's why the study plan we recommend schedules mock reviews as their own sessions.

What to do with your score

• Below 75%: the gap is content, not test-taking. Go back through your weakest categories systematically — Guided Learning exists for exactly this — and don't burn another full mock until something has changed. Mocks measure; they don't teach.
• 75–85%: borderline, in the honest sense: you might pass today, and "might" is a bad plan. Drill the weak categories, review every missed question until you can explain why the right answer is right, and take a second full mock in 10–14 days. Two mocks trending upward beat one good one.
• 85% or above, with no category collapsed: you're ready by every signal a practice instrument can give. Confirm it with one more full-length sitting if your first was early in your prep, then schedule the exam. Extending study past readiness mostly adds anxiety, not points.

Timing your last mock

Take your final full-length mock 7–10 days before your test date — late enough to reflect your real level, early enough that you can still act on what it finds. The final week is for review only: missed questions, formulas, flashcards. A mock three days out can't change your preparation; it can only change your confidence, in either direction.

Ready to get a baseline? The free diagnostic takes about 15 minutes and shows your standing in all four categories, and the full mock exam reproduces the real exam's length, weighting, and timing.