So I applied to 5 colleges in US for a PhD in Physics inclined towards Physics Education Research ( scientist study of how to improve the way we teach physics ). However, it is not working out well for me and I am planning to apply to other parts of the world ( like Europe, Australia, Asia). Can anyone kindly suggest me some Universities or Colleges that have PER as a research area in their Physics Department. It would be really of great help to me. This is quite a new field and the reason I want to work in this domain is because I am really interested in improving the standard of science education back in my own country (India).
Any recommendations would be really appreciated

Thank you guys