This is the way PADI describes the Professional Assistant Instructor program in their homepage ! ! !

The PADI Assistant Instructor (AI) course not only provides valuable preparation for Open Water Scuba Instructor training, but also expands skills that enhance an AI's professional capacity. During the course you'll concentrate on developing an academic presentation style that allows you to effectively conduct classroom sessions for any PADI course. Upon completion, you may choose to go on to an Instructor Development Course, or use your practical knowledge and skills as a professional Assistant Instructor.

Having a PADI Assistant Instructor on staff at PADI Dive Centers and Resorts is desirable since you may conduct several PADI programs independently or with minimal guidance from a PADI Instructor. Your qualifications allow the dive center or resort to offer a new dimension in training services to fulfill customer needs. Beyond the responsibilities already earned as a PADI Divemaster, Assistant Instructor teaching opportunities include:

• certifying students as PADI Peak Performance Buoyancy Specialty Divers
• conducting the complete Discover Scuba pool experience
• conducting the MEDIC FIRST AID Course (after additional training as a MEDIC FIRST AID Instructor)
• certifying students in nondiving specialties such as Equipment Specialist (after earning PADI Specialty Instructor certification)