Participants: The sample in this study is the students in Thai language class from primary 6/1, 6/2, and 6/4 in academic year 2008, semester 2, at Saint Gabriel’s college of Thailand were part of the teaching and assessment involving the application of Thai folk songs altogether 196 students. For samples of students achievement I selectively chose 30 students that come from these three classes by consider of achievement in learning Thai language of students in academic year 2008, semester 1, with 3 groups and all of them were selected by me that within the group students abilities high, average, and low performers were presented like this;