In Taiwan, primary school English teaching became a concerned topic of foreign language policy because fifth and sixth graders began to learn English from the academic year 2001 and some of the cities and counties in Taiwan began English teaching from the third grade or even from the first grade. Next, because of the severe discrepancy between cities and countries and students' English proficiency levels, some schools adopted ability grouping instruction, but they were worried about the tag and negative effect. Moreover, due to the open policy of textbooks, schools could select suitable textbooks and materials for their students. The situations of material selection and evaluation as well as the link of materials between primary schools and junior high schools attracted much attention from scholars, teachers, and parents. Besides, education authorities wanted to examine students' English achievement by conducting English proficiency tests. Many scholars thought that the test would put more pressure on parents and students. It might decrease students' interest in learning English. In short, since English teaching is an indispensable trend and we have had some problems in the beginning stage of the implementation, it's necessary to figure out the problems and find out the solutions. This paper first reviewed topics such as English teacher training, the selection of English materials and the situations of English teaching in elementary schools in Taiwan before the academic year 2001. Then, by analyzing questionnaires and interviews collected from teachers in Taipei City and Taipei County, this paper studied primary school English teachers' distribution and teaching situations, ability grouping instruction, multiple assessments, English achievement tests, and the use of materials. In addition to discussing the results of this study, the researcher gave some suggestions for reference. First, it is necessary for teacher training institutes to keep on offering teacher training programs and encourage English teachers to take in-serve study. Second, it is an urgent task for authority to establish a system of licensure and certification for English teachers. Third, schools should avoid tag effect when applying ability grouping instruction. Fourth, authority should carefully administer English proficiency tests. Fifth, teachers should select and evaluate textbooks and materials professionally.