ANDI and IANTD are the oldest tech training agencies around. ANDI enforces stricter gas purity standards and equipment labeling than IANTD. Both agencies have similiar programs, but I feel the ANDI training material is superior. I think its of utmost importance to locate and interview the instructor, and see what type of diving he/she actuall does on a regular basis.. Then decide on the agency if the instructor does both.. ALL ANDI instructors must go through the programs they are to teach ANDI does not do administrative crossovers.
ANDI doesn't allow independent instructors all training must be done through an ANDI facility, also ANDI routinely checks up on all tech instructors... EVERY student who completes any tech program (Level 3 and Above) receives a detailed questionaire to fill out.. This way an instructor who likes to short cut will get caught and thrown out.. To this date ANDI has never had an Insurance claim(including training programs to 100m).. thats 14 years straight, no other agency can claim that... The best I have heard is 4 years in a row..
There have been some well know tech instructors that have been thrown out of ANDI because of the questionaires (including an IT )..
A point of info Tom M. of IANTD and Brett G of TDI were both at one time ANDI instructors, with T.M being an IT. (they left the agency to head IANTD).
There are a great many well know inductry people that have been part of ANDI at one time or another...