I have worked with a few Beagles. They seemed smart and good natured. Their bark is huge for such a little dog. I thought they had a doggy smell and know they shed a lot. They are on my nose list

, that means they live to sniff, and that makes them harder to leash train than the average doggy. They are also have 5 stars for prey drive (same as other hunting breeds).
I hope they pay attention to what you have learned and really think it over.
I know your intentions are the best, but sadly we can only suggest, advise, and teach, when someone listens.