What does online instructor-led (or OIL) mean?
The online instructor-led format is an online course with a scheduled start date and end date, which is the window of time you have to work through the course at your own pace and on your own time. You do not have any set log in times each day. Within the course, you will primarily work through reading material, complete short answer questions and quizzes.
There is an instructor, who is available behind the scenes during the course, will be available for questions via email and will review and correct your work along the way to allow you to move forward in the course.
Related: What to expect from 20 Hour SAFE courses