The aim of the research was to find out the effectiveness of Three-Step Interview
for teaching speaking. This research used quasi experimental research in which
the population of this research was students of the second grade in one of the
senior high schools in Bumiayu. The total sample of the research was 78 students,
and the samples were XI- Language Class as the experiment class which consisted
of 38 students and XI-I Social Science Class as the control class which consisted
of 40 students. The implementation of Three-Step Interview was used in the
experimental class, while in the control class was not given any special treatment.
The test was used in collecting data, namely pre-test and post-test. The test
focused on the language expression of asking for and giving opinion. After the
data were obtained, they were analyzed by using t-test. The result was 3.378, and
it was higher than t-table (1.665) at a 0.05 with df =76. Then, the calculation of tobtained
with t-table was concluded that t-obtained was higher than t-table (3.378
> 1.665). Based on the pre-test to post-test result, it was shown that all of the
aspects in speaking had significant difference at p<0.05. The students could
develop their fluency and comprehension because in Three-Step Interview they
had to take part in interviewing activity, and they had limited time to give the
information. Therefore, the students had to speak fluently and comprehend the
questions well. Furthermore, it was effective for grammar, vocabulary, and
pronunciation. During the activity, the students had to provide the information
with good grammar, adequate vocabulary, and good pronunciation, so that the
process of delivering information could run well. Based on the description
mentioned previously, it could be concluded that Three-Step Interview was
effective for teaching speaking.