Finland and Korea are the highest-performing OECD countries, with average PISA scores of 543 and 541 points, respectively. Other top-performing OECD countries in students’ skills include Japan (529), Canada (527) and New Zealand (524). The lowest performing OECD country, Mexico, has an average score of 420. This means that the gap between the highest and lowest performing OECD countries is 123 points. The gap with Brazil is even larger, with 142 points separating the averageperformance of Brazil and Finland.

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CCP China is far, far behind. It appears on none of the top lists. It's equals are impoverished African nations in this analysis.