Most of the students ' self-evaluation in low level because of the informal inquiry. Foreign students is the same sound that English speaking skills are skills that are rare and cannot be captured in a speech.
Student self-assessment is low because most of us are not official. The answer was that the students speaking English is a difficult skill to master and not to speak.
Most of the students self evaluation in low level because of the time. Many students say the same English speaking skills as hard skills and can not catch the principle of speech.