Standard Celeration Chart
A standardized logarithmic graph used in precision teaching to track learning changes over time.
The Standard Celeration Chart (SCC) is a semi-logarithmic chart that displays proportional changes in behaviour rate. Unlike linear graphs, a straight line on an SCC always represents the exact same relative rate of learning, which makes your visual analysis consistent.
Ogden Lindsley developed the SCC for Precision Teaching. It lets you project learning trajectories and make data-based decisions before a learner plateaus. The uniform scale accommodates behaviours ranging from one per day to 1,000 per minute without changing the chart layout.
For example, a learner reading 20 words per minute who improves to 40 across a week shows a times-two (×2) celeration. On the chart that doubling is the same slope whether it happens at 20 words or 200, which is why teams can compare progress across very different skills at a glance.
Frequently Asked Questions
What is a Standard Celeration Chart used for?
It is used in Precision Teaching to track how fast a behaviour or skill is changing over time, so you can see whether learning is accelerating or stalling and make data-based decisions before a learner plateaus.
What is a celeration line?
A celeration line is the straight line of best fit drawn through the data. Its angle shows the rate of change - angled up means the behaviour is accelerating, flat means no change. A '×2' celeration means the behaviour is doubling each week.
How is a Standard Celeration Chart different from a normal line graph?
A standard line graph uses an equal-interval (linear) scale, so the same vertical distance means different things at different points. The Standard Celeration Chart uses a multiply scale, so a straight line always represents the same proportional rate of learning - making visual analysis consistent across learners and skills.