All courses are 1:1 unless you want to learn with a friend of similar abilities and on a machine of the same capabilities. After an initial briefing and assessment ride (not a test) the rest of your course will be tailored to help you develop your riding skills that you feel needs most attention.Your course can contain "theory" if you want. Whichever way you choose to learn, these are informal courses, focusing on real road situations.
Regular briefings are given throughout the course to let you know how you are progressing
There is a comprehensive debriefing at the end of the course and you can select the content of this debrief, either verbal or written feedback detailing your achievements and progress or an assessment against "Roadcraft" requirements.
The key to being a skilled rider is to be able to control your bike in whatever situations you find yourself.
A 
course will help you develop your awareness of how you can improve your riding.