This study tests the effect of an English intonation-raising strategy on Korean elementary school students’ English pronunciation in aspects of on comprehensibility, nativeness, and the production of tonic syllable. The strategy was applied to a normal English classroom in Korean public elementary school for four months by a Korean English teacher. Subjects were 8 Korean elementary school English learners. They were divided into two groups, Group A and Group B, based on their exposure to an English intonation-raising strategy. Three native speaker raters rated the comprehensibility and nativeness of the recorded sentences. The production of a tonic syllable in each sentence was acoustically calculated in terms of its duration and f0 width. The results show that there are significant differences between two groups’ pronunciation on both comprehensibility and nativeness judgements, and on the production of tonic syllables. These suggest that the English intonation-raising training by Korean English teachers has positive effect on the Korean elementary school students’ English pronunciation.