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Álvaro Choi Evaluating the effects of specific country / regional policies using large scale international assessments is a challenging task. This is primarily because this is not actually what they have been designed for. However, the rich data contained within...

Rolf V. Olsen & Sigrid Blömeke In an earlier blog, we established that international large-scale assessments can be regarded as powerful and influential knowledge sources for making claims about the quality of educational systems. Comparisons between countries have over time...

Sabine Meinck & Agnes Stancel-Piątak For decades, educational researchers have found that children from disadvantaged families often lack access to stimulating learning activities.[1][2] Back in 1995, a famous study called “The early catastrophe. The 30 million words gap” by Hart...