CoreStepPrep USMLE Score Predictor Is Live and Free
The CoreStepPrep USMLE Score Predictor is now live and free forever. Track Step 1, Step 2 CK, and Step 3 performance with weighted predictions and pass likelihood.
Introducing the Core Step Prep NBME and USMLE Score Predictor:
Predicting your USMLE score is one of the most common—and stressful—questions during dedicated prep. You have multiple practice tests, different score scales, and no easy way to see where you are trending.
To simplify this, the **CoreStepPrep Score Predictor** is now live and **free forever** on the CoreStepPrep Free Tier. It pulls together your assessment history across Step 1, Step 2 CK, and Step 3 so you can see a clear, data-driven picture of your trajectory.

What's New
The new Score Predictor gives you a single place to track and interpret your USMLE performance over time. Instead of juggling spreadsheets, screenshots, and scattered notes, you can now centralize your assessments and let the platform handle the heavy lifting.
It is available directly inside CoreStepPrep with a basic free account—no credit card, no trial period, and no paywall. Once you log in, you can start adding assessments and see your predicted scores update in real time.
Core Capabilities at a Glance
- **Step-wide coverage**: Step 1, Step 2 CK, and Step 3
- **Multiple assessment sources**: NBME, Free 120/137, CBSE/CCSE, CSPCE, and clinical shelves
- **Score prediction + pass likelihood**: 3-digit predictions with confidence intervals
- **Visual tracking**: Dual-axis graph for EPC % and 3-digit scores
- **Sharing**: Generate a shareable prediction card for quick check-ins
Who It Helps
The Score Predictor is built for any learner navigating the USMLE sequence who wants clarity on where they stand. It is especially useful if you are taking multiple practice exams and want a consistent way to interpret them.
Because it supports Step 1, Step 2 CK, and Step 3 inputs, it can follow you across your entire exam journey. You do not need separate tools or calculators for each stage.
Typical Use Cases
- **Pre-dedicated Step 1 students** tracking early NBME CBSE and CBSSA performance
- **Clinical students** managing Step 2 CK prep while juggling shelves and CCSE/CCSSA forms
- **Residents and graduates** planning for Step 3 using CCMSA, UWorld self-assessments, and Free 137
- **Study groups and accountability partners** who want a shared, objective snapshot of progress
What's New
Weighted Score Prediction (Recency Matters)
The predictor uses **weighted averages** that emphasize your most recent assessments. This keeps your prediction aligned with your current level rather than older scores from weeks ago.
As you add new assessments, the prediction updates automatically. You can see how each new data point shifts your expected performance for test day.
Interactive Progress Graph
A **dual-axis progress graph** lets you visualize both your NBME-style EPC % and your predicted 3-digit score. This makes it easier to connect how your practice percentages translate into score estimates.
You can follow your trajectory over time and see a clear trendline leading up to your scheduled exam date. This helps you decide whether you are on track or need to adjust your study plan.
Pass Likelihood Calculator with Confidence Intervals
The predictor includes a **pass likelihood calculator** that uses your predicted score and confidence interval to estimate how likely you are to pass. It references the current passing standards for each exam:
- **Step 1 passing standard**: 196
- **Step 2 CK passing standard**: 218
- **Step 3 passing standard**: 200
Instead of staring at a single number in isolation, you get a more nuanced view that accounts for variability and uncertainty around your prediction.
Exam Date Tracking
You can **set your exam date** directly in the tool. The graph then marks:
- **Today**
- **Your exam date**
- **Days remaining**
This gives you a visual countdown alongside your performance trend, making it easier to pace your assessments and adjust your preparation timeline.
Easy Assessment Management
The interface is designed so you can **add, edit, and remove assessments quickly**. It supports:
- **EPC % entry** for NBME forms
- **Raw % entry** for Free 120/137
If your assessment mix changes or you retake a form, you can update your entries in seconds and immediately see how your prediction shifts.
Shareable Prediction Card
You can generate a **shareable prediction card** that summarizes your current predicted score and trajectory. This is useful for:
- Study groups comparing progress
- Accountability partners tracking consistency
- Quick “am I cooked?” style check-ins without sharing your entire dashboard
It gives you a concise, visual snapshot that is easy to discuss with peers or mentors.
Key Details
The Score Predictor is designed to be a **single hub** for your USMLE assessment data. It supports a broad range of assessments across all three Steps.
Supported Assessments by Exam
| Exam | Assessment Type | Supported Forms / Details | |--------|-----------------|----------------------------| | Step 1 | NBME CBSE | CBSE 1–3 | | Step 1 | NBME CBSSA | Forms 26–33 | | Step 1 | Free 120 | 2022, 2024 | | Step 1 | CSPCE | Forms 1–2 | | Step 2 | NBME CCSSA | Forms 9–16 | | Step 2 | NBME CCSE | Forms 1–3 | | Step 2 | Free 120 | Jul 2023, Mar 2023 | | Step 2 | CSPCE Step 2 | Forms 1–2 | | Step 2 | Clinical Shelves| IM, FM, Surgery, Peds, OB-GYN, Psych, Neuro, EM | | Step 3 | Step 1 Result | Pass/Fail entry | | Step 3 | Step 2 CK Score | Actual score entry | | Step 3 | NBME CCMSA | Forms 5–7 | | Step 3 | UWorld SA | Self-assessments 1–2 | | Step 3 | Free 137 | Dec 2023, Aug 2022/Nov 2020 | | Step 3 | CCS Cases | High Yield CCS Cases |
As you add data from these sources, the predictor aggregates and weights them to generate your current score estimate. You can mix and match across categories as your prep evolves.
Why This Tool Exists
Most score predictors are:
- Hidden behind paywalls
- Built for only one exam
- Based on outdated mappings
- Opaque about how they are calculating predictions
The CoreStepPrep Score Predictor is designed to be **transparent, up-to-date, and comprehensive** across Step 1, Step 2 CK, and Step 3. The goal is to give you a single, consistent place to track your entire USMLE journey.
How to Use
You can start using the Score Predictor immediately with a free CoreStepPrep account.
👉 **Access it here:** https://corestepprep.com/#/score-predictor
Step-by-Step Workflow
- **Create or sign in to your free account**
- No credit card required.
- Navigate to the `Score Predictor` inside the platform.
- **Set your exam and exam date**
- Choose Step 1, Step 2 CK, or Step 3.
- Enter your planned test date so the graph can show days remaining.
- **Add your assessments**
- Enter NBME EPC % values for supported forms.
- Add raw percentages for Free 120/137 where applicable.
- Include CBSE/CCSE, CSPCE, shelves, CCMSA, UWorld SAs, and other supported inputs.
- **Review your prediction and trendline**
- Check your predicted 3-digit score and confidence interval.
- Look at the dual-axis graph to see how your EPC % maps to predicted scores over time.
- **Share your prediction (optional)**
- Generate a shareable prediction card.
- Use it for study group discussions or accountability check-ins.
As you complete new assessments, return to the tool, update your entries, and watch how your prediction and pass likelihood evolve.
FAQ
Is the Score Predictor really free?
Yes. The Score Predictor is available on the **CoreStepPrep Free Tier** with a basic account. There is no credit card required, and it is intended to remain free.
Which exams does it support?
It currently supports **USMLE Step 1, Step 2 CK, and Step 3**. Within each, it accepts a wide range of NBME, Free 120/137, CSPCE, shelf, and other relevant assessments.
Can I use it if I am only taking one exam?
Yes. You can use it for just Step 1, just Step 2 CK, or just Step 3. The tool is flexible enough to follow you across multiple exams, but it works equally well if you are focused on a single Step.
How can I give feedback or request new assessments?
Feedback is encouraged. After you have tried the predictor, think about:
- Which additional assessments you would like supported next
- What feels missing or unclear in the interface
- What changes would make it more useful in your day-to-day prep
Sharing that feedback helps shape future improvements and additions.
Key Takeaways
- The **CoreStepPrep Score Predictor** is now live and **free forever** with a basic CoreStepPrep account.
- It supports **Step 1, Step 2 CK, and Step 3** with a wide range of NBME, Free 120/137/137, CSPCE, shelf, and other assessments.
- A **weighted prediction algorithm**, **dual-axis progress graph**, and **pass likelihood calculator** help you understand where you are trending for test day.
- **Exam date tracking** and **easy assessment management** make it simple to keep your data current and your trajectory visible.
- You can access it now at **https://corestepprep.com/#/score-predictor** and start tracking your USMLE journey in one place.