Calculate Celeration
What is Celeration?
Celeration is a measure of how quickly behavior is changing over time. It's a key concept in Precision Teaching developed by Ogden Lindsley.
Unlike simple subtraction (which shows absolute change), celeration uses multiplication/division to show proportional change. This is called a "times-divide" or ratio approach.
On the Standard Celeration Chart's logarithmic scale, constant celeration appears as a straight line. This makes learning trends easy to see and compare across different learners and content areas.
"Standard" in Standard Celeration Chart means everyone uses the same scales, so a ×1.5 celeration looks identical on any chart.
How to Use This Calculator
- Enter your starting performance (beginning of the period)
- Enter your ending performance (end of the period)
- Specify how many weeks the period covers
- Click Calculate to see your weekly celeration
Interpreting Results
x2.0Excellent growth (doubling per week)
x1.5Good growth (standard learning celeration)
x1.25Moderate growth (may need intervention)
x1.0No change (plateau)
÷1.25+Deceleration (performance declining)