padi IDC theory – PADI Standards and Procedures

Answer
No.
Deep dive is a maximum ratio of 8:1. This ratio can not be increased by the use of a certified assistant. 
Advanced Openwater Course Pg. 83 point 3
Q2.
You have 8 students in an openwater course. You plan to do openwater training dive number 1. You also have one divemaster in training, giving you a total of 9 students. Is this allowed having more than 8 divers with you?