There are many theories that have influence on the field of second language acquisition, and all of the theories have different principles and ideas. The knowledge about theories, methods, approaches, strategies and techniques is essential in order to have effective language classes. However, many of the instructors and teachers have lack of information about the language theories based on a survey which has been conducted in a social media poll. The poll consisted of two basic questions which were: 1-Are you familiar with the language theories? 2-Have you studied language theories in your academic studies? The number of teachers who answered the questions were 63. The teachers are teaching from both the public sector and private sector. The result