USMLE Step 1 Full Simulator
Post-May 2026 Format: 14 Blocks • 20 Items/Block • 280 High-Yield Questions
- 14 Timed Blocks (30 Minutes per block, 20 items each, 280 total questions).
- Seamless immediate transition between blocks with opt-in break usage.
- 55-minute main Break Bank + 5-minute optional tutorial with time rollover.
- Deferred Feedback Rule: Explanations & score diagnostics remain locked until the full 14-block exam is finished.
NBME Step 1 Testing Interface Tutorial
Welcome to the USMLE Step 1 Computer-Based Test Simulator. Key controls and functions include:
Red Flagging Items
Click "Mark" in the top header toolbar to flag questions for review later within the current active block.
Reference Lab Values
Search laboratory reference tables for blood, urine, hematology, and CSF normal values at any time.
Highlight & Strikethrough
Select stem text to highlight key findings. Click option strikethrough icons to eliminate distractors.
Immediate Block Progression
Completing a block immediately transitions you into the next block. You can also opt into taking a break using your break bank.
Block 1 Complete
Examinee Break Mode Active
Click below when you are ready to resume and initialize Block 2.
USMLE Step 1 Official Score Report
Standard Specification • 14 Blocks Completed (280 Items Total)
Performance by Organ System
Performance by Discipline
280-Item Diagnostic Review & Rationale
Review complete NBME rationales and distractor breakdowns for all 14 blocks.