The questionnaires were designed, and then the students’ questionnaire was translated into
Vietnamese. The researcher asked Doctor Nguyen Hoang Tuan for his comments on the
questionnaire to validate it. Then the questionnaire was revised. On the first of August, two
hundred and three sheets of questionnaire were delivered to the grade 11 students of five
classes at Le Thanh Hien High School fifteen minutes before the classes began. The
researcher explained clearly the purposes of administering the questionnaire which were to
find the students’ speaking problems, the factors affecting their performance and to find ways
to improve the students’ speaking skills. Then the teachers instructed the students to complete
it. On the same day, ten sheets of teachers’ questionnaire were distributed to ten teachers of
English in their twenty- minute break at the staff room. Oral instructions and explanations
were given in detail to the teachers by the researcher before they answered the questionnaire
to avoid any misunderstandings. Then, completed questionnaires were collected.