PISA’s strength doesn’t lie in telling you what you should do, but in telling you what everyone else is doing.

Rethink educational testing: Modern economies do not care what you can memorize; they reward what you can actually do with your knowledge in unpredictable, changing environments.

Excellence requires equity: The best-performing nations do not sort or segregate students early on. They operate under the absolute belief that every single child can succeed, shifting focus from “standardization” to “personalized learning.”

Value teachers over small classes: High-performing systems systematically invest in higher teacher pay, professional collaboration, and continuous career pathways rather than strictly forcing tiny class sizes at the expense of teacher quality.

Distribute resources equitably: Systemic educational success (like Finland’s) is achieved by intentionally sending the strongest school principals and the most talented teachers into the toughest, most socioeconomically disadvantaged classrooms.