Global Standards Coordinator, GD&T Trainer/Consultant There is no way I would have passed the GDTP Senior Level Exam on the first try without taking AGI's Certification Prep Course. Not only will you greatly enhance your understanding of the Y14.5 Standard, you are given instructions on recognizing those "trick" questions and the proper ways to "think through" the questions asked. Only 15% of people pass this exam on the first try, but that number would be even less but for those of us who took this course! Thanks, Norm and the rest of the AGI Team! - Larry Weber