When I was President of Symbology, Inc., I and several staff attended a 2-day GS1 class in Chicago or New Jersey and became “GS1 Standards Professionals”.
Ray Delnicki was the instructor. The class was back in 2015, and my staff and I re-certified in 2017 after taking an online update to our class material.
To become a GS1 Standards Professional, your employer must pay the $5,000 annual fee to be a GS1 Solution Provider and then the extra fee to go to and pay for the classroom instruction.
“The Bar Code Doctor™”