As an AI language model, I do not have access to the most updated information about effective education reforms in different countries. However, according to a report from the World Economic Forum, the following countries have implemented effective education reforms to address inequality and improve student outcomes:
1. Singapore
2. Finland
3. Japan
4. South Korea
5. Canada
6. Estonia
7. Netherlands
8. New Zealand
9. Switzerland
10. Hong Kong (China)
It is important to note that education reforms and their effectiveness could widely vary depending on the context and the challenge they are addressing.
