The purpose of this study is to investigate the requests students feel during Korean phonology classes and to find out the reasons why teachers don’t or can’t accept the requests of students during the Korean phonology lessons. The biggest request of the students is the explanation of the exceptions of phonological rules, more detailed descriptions of morphologic terms, more examples, and a summary table of phonological processes are the next. The reasons why teachers don’t accept the requests are the low level of the students’ ability, reject of meaningless memorization, preference of students’ independent study. The reasons why teachers can’t accept the requests are insufficient time for textbook progress, lack of grammatical knowledge, unawareness of the students’ requests, necessity of excessive effort, disagreement of colleague teachers. If the values of teachers conflict with the needs of students, teachers should look back on their values from the perspective of students. In some cases, teachers want to accept students’ demands, but they can’t. To prevent such cases, textbook publishers, educational authorities and scholars should provide teachers with conditions to meet their students’ needs.