Taking English tutorial classes has the great impact on Thai students these days, especially for Mathayom 6 students who have to further their education to the university. Students have to determine their goals before learning that are to further grades and to prepare for the university. It suggests that it is important to help students to know their goals in learning language clearly and to develop the admission system to have the better standard. They also study new vocabulary while learning and evaluate the learning results after learning. The tutors are very important factor for students to learn language, so teaching techniques from the instructors will affect language acquisition. Generally, the motivation that students know the importance of English and want to communicate English fluently has the greater impact on taking English tutorial classes because studying a lot will help them succeed more in English.