Which AFI contains charts with exceptions and notes for calculating promotion points?

The correct answer is AFI 36-2502, which is the Air Force Instruction that specifically governs the Enlisted Airman Promotion System. This AFI includes detailed information on how promotion points are calculated, including various charts that outline exceptions, notes, and specific criteria for each category that contributes to an airman's promotion score. The inclusion of these charts helps airmen understand how different aspects of their service, such as decorations, qualifications, and performance reports, translate into promotion points.

The other options do not relate directly to the calculation of promotion points. AFI 36-2618 focuses on the Enlisted Force Structure, outlining roles and responsibilities rather than promotion point calculations. AFI 36-2406 deals with officer and enlisted evaluations and performance reports but does not include promotion point details. AFI 36-2903 sets standards for dress and appearance, which is unrelated to the promotion process. Therefore, AFI 36-2502 is the relevant instruction for understanding promotion point calculations in the context of the Weighted Airman Promotion System.