Un-Trained
No experience of the skill/task/process.

Learner
Being taught the skill/task/process.

Practitioner
Can carry out the skill/task/process:
– Safely;
– To the correct quality standards, first time;
– Without assistance;
– To 1,5 times the standard cycle time i.e. Is still not up to speed.

Developer
Can improve the skill/task/process:
– Safely;
– To the correct quality standards, first time;
– Without assistance;
– Work to the standard cycle time.

Coach
Someone who has the skill level of a developer, but can train and develop others in carrying out the skill/task/process:
– Safely;
– To the correct quality standards, first time.