Scoring, Pacing, and Retake Rules

Scoring is scaled, not a simple percent

ABNN uses a criterion-referenced passing standard. Stroke nursing experts and psychometricians help identify the raw score that a minimally competent candidate should achieve on a specific form. ABNN then converts raw scores to scaled scores so results are comparable across forms that may differ slightly in difficulty. On that reporting scale, 200 is the passing point.

Do not convert 200 into a percent-correct target. The exact raw number needed to pass can vary by exam form. Your preparation target should be stronger: consistent performance across all five domains, especially on case items that combine time, neurologic assessment, safety, and nursing judgment.

Pacing the 170-item form

The exam contains 170 items in 180 minutes. That is about 64 seconds per item if you use every minute. The 20 unscored pretest items are mixed in, so you cannot slow down only for scored items. You need a pace that lets you answer carefully without losing the final stretch.

Use a two-pass method. On the first pass, answer questions you can reason through, eliminate unsafe choices, and flag items where two choices remain plausible. Avoid a 4-minute struggle on one item unless the stem is genuinely complex and high-confidence. On the second pass, revisit flags with the original clinical priority in mind: airway, glucose, neurologic deterioration, bleeding, aspiration risk, and timely escalation often decide the best answer.

Retake rules shape remediation

A candidate who does not pass may reapply for a later administration, but ABNN limits testing to one attempt per examination window and no more than three attempts in 12 months. Repeat candidates must submit a new application and pay the full examination fee. That makes a failed attempt expensive in both money and calendar time.

Remediation should start with the blueprint. Tag each missed practice item as anatomy/pathophysiology, hyperacute, acute, post-acute, or prevention. Then tag the reasoning error: missed syndrome, wrong sequence, medication safety, scope issue, delayed escalation, or weak discharge planning. A nurse who misses hyperacute contraindication questions needs a different plan from a nurse who misses prevention education questions.

Certification duration after passing

Passing candidates may use the SCRN credential, but certification is time-limited. The certification period is 5 years, expiring on December 31 of the fifth year after certification. Recertification can involve retaking the exam or meeting ABNN continuing education and work-hour requirements during the fifth year. Build professional habits, not just test habits: stroke quality metrics, guideline review, and continuing education begin to matter immediately after passing.

Practice under exam conditions

At least twice before test day, complete a long timed block without pausing for notes, texts, or guideline lookups. The purpose is not only to estimate content readiness. It also exposes fatigue patterns, reading speed, over-flagging, and the types of case stems that slow you down. Review guesses separately from misses. A correct guess still needs remediation if you could not explain the stroke phase, the urgent risk, and why the other options were less safe.