The quality of teachers is an important predictor of student achievement. The methods to attract, select, train, and retain outstanding teachers have been attracting considerable attention the field of Taiwanese education. This article explores the selection of preservice teachers, aiming to understand the background of reasons for teacher selection in the United States, Britain, Australia and Singapore and the current selection criteria and practices. The study results found that these four countries control teacher education quality through dedicated units. The selection tests focus on basic reading and writing skills, and the selection method is mainly based on cognitive tests. This study of preservice teacher selection in four countries provides inspiration for developing basic ability tests to ensure that preservice teachers have the necessary academic foundation and establishing appropriate selection criteria combined with diversity non-cognitive testing.