The result of the t-test was 0.0098. The mean score of the speaking and listening
pre-test was 27.73 and that of the post-test was 47.60. The standard deviation of the
pre-test was 6.04 and that of the post-test was 5.41. Therefore, it is concluded that
CALL is effective for enhancing the English listening and speaking skills of
Mathayom Suksa 4 students at Samakkhiwitthayakhom School and they have a very
good motivation through CALL.