I’ve passed the 50 hours of classwork and 60 hours of supervised gardening, help line, etc, and two exams to earn certification as a Master Gardener. It was a challenging course given by the Massachusetts Master Gardener Association (MMGA). I recommend it highly to anyone in central Mass. Also, most states offer their own MG courses.
Every week we had full day lectures given by top experts in the field. They really did bring in the best. Topics included soils, composting, botany, insects, garden design, perennials, berry plants, pruning, vegetable gardening, and others. Every day I would go to class with such anticipation and leave feeling like I wanted to get right out in the garden and practice what I learned. It was fantastic.