This paper aimed to reexamine the current EFL communicative speaking skill in high school level in Thailand due to the coming of the entry to ASEAN at the end of the year 2015. Thai students need to be well prepared for workforce in the future since English is used as the working language in ASEAN. The purposes of this paper were to study the effect of dramatic activities on improving English communicative skills of grade 11th participants and to examine students' opinions towards the use of dramatic activities in their speaking class. The duration of experiment was 21 hours within 7 weeks. The research instruments were lesson plans using dramatic activities, English communicative speaking test and a questionnaire measuring students' opinions towards the teaching based on dramatic activities. The findings were that the English communicative speaking skill on grade 11th students after attending the teaching class using dramatic activities was significantly higher than before attending the teaching and the students' opinions towards dramatic activities on speaking were highly positive.