I am not BCGP, but I know two pharmacists who are who both studied together. they took the exam in 2018, can't remember if it was spring or fall but I think spring. I asked him why so many ppl failed this exam, he said that the license used to be through a different organization, and then BPS took over. This transition/ changes to material that would be covered on the exam made it difficult to study for so many people failed? best way I know to describe what happened. Its anticipated that the scores will go up.
They also used the BCGP boot camp and passed and there are fewer study materials out there. They said it was worth it.
I know this post is almost one year old but still hope this info helps other ppl.