The phrase "notable exception" refers to an instance or situation that deviates from a general rule, pattern, or expectation. It is something that stands out as being different or unusual compared to other similar cases. The term can be used in various contexts such as describing an individual who achieves success despite facing significant challenges or obstacles, or highlighting a country that has made progress towards development goals while others have lagged behind. In essence, the phrase is used to acknowledge and draw attention to something that deviates from what is typically expected or observed.