The Impact of Two-Way Dialogue Strategy On Speaking Ability for Eleventh Grade Students of SMA Harapan 1 Medan

This research was proposed to gain whether there is a meaningful influence of applying a two-way dialogue on students' speaking ability. The research method was an experimental analysis in a quantitative approach. The sample of this research was eleventh-grade students of SMA Harapan 1 Medan which consisted of 60 students divided into two classes, the experimental and the control classes as representation consisting of 30 students in each class. Experimental group was taught using two-way dialogue strategy, while control group was taught conventional strategy. Data was gained using pre-test and post-test. A pre-test was administered to both groups before treatment and a post-test was administered after treatment. Then, the instrument applied to gather data was oral test in the design of short dialogue. To examine data, the researcher employed t-test. The result of the study was thatthe lowest the score of pre-test in experimental group was 69 and the highest score was 90. the lowest score of post-test  was 75 and the highest score was 90. Futhermore, for control group, the lowest score of pre-test was 60 and the highest score was 80. while the lowest score of post-test was 65 and the highest score was 85. It means that two-way dialogue strategy had significantly influenced students' speaking ability