Specific to your point—I would argue the distribution of types of biology teachers and/or students fits a a skewed distribution or maybe in the last few years a bimodal distribution with those leaning more to the organismic and those leaning to the more molecular…

My point is that novelty and adaptation to a specific environmental change occurs as the distribution shifts or skews in one direction or another—directional selection. The drive to large-scale test accountability has created a stabilizing selection environment—an environment that trims the variation in the biology teacher species. Not good.