Educational psychology, of course. Psychology belongs to science and holds a bachelor's degree in science. Why is it harder? Because the main courses that psychology needs to learn are: psychostatistics, psychometrics and so on. Need a foundation in mathematics. It is necessary to carry out exercises that require abstract thinking ability, such as variance analysis and regression analysis. Pedagogy tends to liberal arts, and there are no such things. Of course, if you are a master of mathematics, it doesn't matter if you have no pressure in statistics and measurement.