Data-Based Decision Making in Learning: Using Your SAFMEDS Data Effectively
Every SAFMEDS session generates data—counts, accuracy, trends over time. Most students glance at their numbers and move on. They're missing the point.
Data isn't just for tracking; it's for deciding. Your practice data tells you what's working, what's failing, and what needs to change. Used well, it transforms SAFMEDS from hopeful practice into precision learning.
This guide teaches you to read, interpret, and act on your learning data—making decisions that accelerate your path to fluency.
Why Data-Based Decisions Matter
The Alternative: Feeling-Based Decisions
Without data, decisions rely on subjective feeling:
| Feeling-Based | Data-Based |
|---|---|
| "I think I'm improving" | "My celeration is x1.4 this week" |
| "This deck feels harder" | "My accuracy on this deck is 78% vs. 91%" |
| "I'm probably ready for the exam" | "I've achieved fluency aims on 8/10 decks" |
| "Something's wrong but I don't know what" | "Errors increased when I switched to evening practice" |
Feelings are unreliable indicators of learning. Research on metacognition consistently shows people are poor judges of their own knowledge. Data provides objectivity.
The Precision Teaching Foundation
SAFMEDS inherits data-based decision making from Precision Teaching, which holds:
This philosophy applies to your own learning. Let your data guide your decisions.
Understanding Your Core Metrics
Count Per Minute (Frequency)
What it is: Number of correct responses in 60 seconds
What it tells you:
How to interpret:
| Count | Interpretation |
|---|---|
| Below 20/min | Building foundation; not yet fluent |
| 20-35/min | Developing; approaching functional level |
| 35-50/min | Solid performance; nearing fluency |
| 50+/min | Fluent for most content types |
Accuracy (Percent Correct)
What it is: Correct responses ÷ Total responses × 100
What it tells you:
How to interpret:
| Accuracy | Interpretation |
|---|---|
| Below 80% | Too many errors; may be building wrong responses |
| 80-90% | Acceptable; normal while building speed |
| 90-95% | Good balance of speed and accuracy |
| Above 95% | Excellent accuracy; may be able to push speed more |
Celeration (Learning Rate)
What it is: Rate of change in performance over time (weekly)
What it tells you:
How to interpret:
| Weekly Celeration | Interpretation |
|---|---|
| Below x1.1 | Stagnant; something needs to change |
| x1.1 - x1.25 | Slow improvement; could be better |
| x1.25 - x1.5 | Good progress; acceptable rate |
| x1.5 - x2.0 | Excellent progress; maintain conditions |
| Above x2.0 | Rapid improvement; very effective approach |
Error Patterns
What to track:
What it tells you:
Reading the Standard Celeration Chart
Basic Chart Interpretation
The Standard Celeration Chart displays:
What the Chart Shows
| Pattern | What It Means | What to Do |
|---|---|---|
| Steady upward trend | Consistent improvement | Continue current approach |
| Upward trend steepening | Accelerating improvement | Note what changed; replicate |
| Upward trend flattening | Decelerating improvement | Check for ceiling effects or barriers |
| Flat trend | No improvement | Change something—current approach isn't working |
| Downward trend | Performance declining | Investigate immediately |
| High variability | Inconsistent performance | Stabilize practice conditions |
| Errors decreasing as corrects increase | Healthy learning pattern | Ideal pattern—continue |
| Errors staying flat while corrects increase | Speed outpacing accuracy | May need to consolidate before pushing more |
Celeration Lines
Drawing a celeration line (trend line) through your data reveals your learning rate at a glance:
TAFMEDS calculates this automatically, showing your celeration value directly.
Making Data-Based Decisions
Decision 1: Is This Deck Working?
Data to check: Weekly celeration
Decision criteria:
| Celeration | Decision |
|---|---|
| x1.5+ sustained | Deck is working; continue |
| x1.25-1.5 sustained | Deck is adequate; consider improvements |
| Below x1.25 for 2+ weeks | Deck needs intervention |
If intervention needed, check:
Decision 2: Am I Ready to Move On?
Data to check: Performance relative to fluency aim + retention test
Decision criteria:
If yes: Add new content or advance to maintenance schedule
If no: Continue until criteria met
Decision 3: What's Causing This Problem?
When performance isn't meeting expectations, diagnose systematically:
Step 1: Characterize the problem
| Symptom | Possible Causes |
|---|---|
| Low celeration, okay accuracy | Deck too easy; need more challenge |
| Declining accuracy | Moving too fast; need consolidation |
| High variability | Inconsistent practice conditions |
| Sudden drop | External factor; check recent changes |
| Plateau near aim | Approaching ceiling; may need different strategy |
Step 2: Check potential causes
Step 3: Make one change
Decision 4: Which Deck Needs Attention?
When practicing multiple decks, prioritize based on data:
| Priority | Criteria |
|---|---|
| High | Low celeration + far from aim |
| Medium | Adequate celeration + far from aim |
| Medium | Low celeration + near aim |
| Low | Adequate celeration + near aim |
| Maintenance | At aim + stable |
Allocate more practice time to high-priority decks.
Data Patterns and Their Meanings
The Healthy Learning Curve
Pattern: Steep initial improvement, gradually flattening as aim approached
What it means: Normal learning trajectory—rapid gains when much room to improve, slower gains near ceiling
What to do: Continue; expect flattening near aim
The Plateau
Pattern: Performance flat for extended period (2+ weeks)
Possible causes:
What to do: Diagnose cause; intervene accordingly
The Regression
Pattern: Performance declining after previous gains
Possible causes:
What to do: Identify what changed; address root cause
The Sawtooth
Pattern: Performance varies dramatically session to session
Possible causes:
What to do: Stabilize practice conditions; consider deck reorganization
The Breakthrough
Pattern: Sudden performance jump after period of slow growth
What it means: Consolidation completed; new level of automaticity achieved
What to do: Celebrate and maintain new level
Data Review Routines
Daily Review (1 minute)
After each session:
Weekly Review (10 minutes)
Each week:
Weekly review questions:
Monthly Review (30 minutes)
Each month:
Monthly review questions:
Common Data Interpretation Mistakes
Mistake 1: Overreacting to Single Data Points
Problem: One bad session triggers major changes
Reality: Individual sessions vary; trends matter more than points
Fix: Make decisions based on weekly patterns, not daily fluctuations
Mistake 2: Ignoring the Data
Problem: Practice without ever reviewing performance
Reality: You're missing crucial feedback
Fix: Build data review into your routine
Mistake 3: Focusing Only on Count
Problem: Celebrating high counts regardless of accuracy
Reality: High count with low accuracy means practiced errors
Fix: Monitor count AND accuracy together
Mistake 4: Not Tracking Across Time
Problem: Only looking at today's performance, not trends
Reality: Celeration (trend) predicts future success better than current level
Fix: Use charting that shows trends over time
Mistake 5: Changing Too Many Things at Once
Problem: Multiple simultaneous changes make it impossible to know what helped
Reality: Scientific approach requires changing one variable at a time
Fix: Change one thing, observe for a week, then evaluate
Using TAFMEDS Data Features
Dashboard Analytics
TAFMEDS provides:
Making the Most of Your Data
Before practice:
After practice:
Weekly:
From Data to Action: Decision Flowchart
When reviewing your data, follow this decision process:
Step 1: Is celeration adequate (x1.25+)?
Step 2: Is accuracy adequate (85%+)?
Step 3: Is practice consistent (daily)?
Step 4: Are cards appropriate?
Step 5: Are conditions optimal?
Step 6: Still struggling?
Conclusion
Your SAFMEDS data is a conversation between you and your learning. It tells you:
Data-based decision making transforms practice from hopeful effort into precision skill-building. Instead of wondering if you're improving, you know. Instead of guessing what to change, you diagnose systematically.
The data-driven learner:
Trust your data more than your feelings. Your feelings will tell you that familiar content is learned (it may not be) and that hard practice isn't working (it probably is). The data reveals the truth.
Let the data guide you to fluency.
Track and analyze your learning with TAFMEDS—data-driven practice for measurable results.


