Khao Lak Scuba Adventures PADI 5 star CDC Centre offers two types of IDC PADI Instructor Developement Course with the world most experienced and award winning course director Mark Soworka. Both courses are exactly the same for the actual IDC as certain requirements must be met. It’s after you have passed the exam is when we see the differences between the two. Our IDC classic is exactly what it says on the tin. 2 weeks IDC followed by 2 days of exams with an external examiner. The IDC internship involves 4 trips paid work experience on any one of our 7 boats after the IDC. This is your chance to use all the knowledge you have just gained in a real world setting under the close guidance of other experienced instructors who will be on the boats with you.