Anantadjaya, S. P.; Nawangwulan, I. M.; Rachmat, T. A.; Muqaddasah, P. A. Challenges of the Modern World in the Educational Field: Mixed Methods on Depression, Anxiety & Stress, GPA, OCB & Dropouts Rate in UK, Ireland & Spain. Rev. Multidiscip. Educ. Cult. Pedag. 2026, 5, 123-142.