Top Schools, Affordable Cities: PISA × Cost of Living

🇻🇳 Vietnam ranks PISA 468 (#37 globally of 88) at just 45% of US prices — the highest PISA-per-dollar destination for expat families in 2026. The Pareto frontier — 6 countries that no other country beats on both higher PISA and lower cost — is the shortlist for relocators with school-age children.

PISA is the OECD's standardized assessment of 15-year-olds in math, reading, and science, run every 3 years across ~80 countries. The OECD average is ~500. Top-tier systems (Singapore, Japan, Korea, Estonia) consistently score above 540. Cross with cost of living, and a clear pattern emerges: a handful of Eastern European countries (Estonia, Czech Republic, Poland, Slovenia) deliver world-class PISA at 50-60% of US prices — something Western Europe and North America can't match at any price.

Caveat: PISA measures testable academic outcomes, not the full educational experience (extracurriculars, language exposure, university pathways). For relocation decisions, also weigh local-language vs international-school availability, and whether your destination has English-track public schools. The Pareto frontier here is a useful starting filter, not a final answer.