LEED AP BD+C hardest sections — where do most candidates lose points?

I passed the leed ap BD+C exam on my second attempt last year and I want to share what surprised me about the difficulty. The Energy and Atmosphere (EA) credit category is where most candidates I've spoken with lose the most points. The calculations for energy modeling compliance paths, ASHRAE baseline references, and renewable energy percentages require a level of precision that the Green Associate exam never tested.

Indoor Environmental Quality (EQ) was my personal weak spot the first time. The prerequisite requirements and the distinction between MERV ratings, ventilation rate procedures, and monitoring systems are easy to confuse under exam pressure. The leed exam doesn't just ask what a credit requires — it asks about prerequisites vs credits, thresholds, and compliance documentation.

Spending a week on each credit category using structured practice questions from LEED AP BD+C Practice Questions helped me identify my gaps systematically. What study resources beyond the GBCI reference guide did candidates find most useful?