This study aims at finding out whether the ELSA Speak application
significantly affects students' speaking abilities. This study was conducted using an experimental design. The population of this study was twelfth grade students of SMA N 2 PLUS Panyabungan. The total sample was 60 students. Two classes were chosen as the samples. The twelfth grade students of MIA- 1 are the experiment class, and the twelfth grade students of MIA-2 are the control class. The experiment class was taught using the ELSA Speak application, while the control class was taught using the role-play method. The instruments used in this study were the pre-test and post-test of the oral test. The data were analysed using a t-test. The result of computing the t-test obviously showed that t-observed is higher than t-table (2,37 > 1,67) with the degree of freedom 66 (df = N-2) at the level of significance 0,05 one tail test. It showed that the application of the ELSA Speak application had a significant effect on students speaking abilities.The objective of this study was to identify the effect and the significancy degree of ELSA SPEAK application on the students’ speaking ability at SMA N 2 PLUS Panyabungan. The research conducted experimental method which took twelfth grade students of MIA-1 as the experiment class and twelfth grade students of MIA-2 as the control class. each class consisted of 33 students.