In other news counties with the highest incidence of kidney cancer (very rare) have few people [1] and surprisingly many of the best schools are small [2].
In any noisy metric small samples tends to be overrepresented at the extremes. Emsi (the company behind this article) should note this where appropriate.
[1]: https://dataremixed.com/2015/01/avoiding-data-pitfalls-part-...
[2]: https://caroljacoby.wordpress.com/2015/04/13/are-small-schoo...