对于其他的重要目标，也必须做同样类型的比较，如改善教育质量 — — 这一目标的实现难度之高出乎意料，许多发达国家在经合组织国际评估中的差劲表现就是明证。
The same type of comparison must be made for other important goals, such as improving the quality of education – a surprisingly difficult objective to achieve, as many developed countries have learned from their poor performance in the OECD’s international assessment.