Nowadays the need to improve English language skills for students and workers becomes more demanding as English is used in variety of purposes, for example, business, tourism, engineering, where more ESP skills such as intercultural competence are needed to ensure the success in academic or professional setting. To meet this growing demand, American Intercon Institute (Aii) offers English for Specific Purposes Program (ESP Program) to prepare them for their specific challenges either in their study or work. This program includes skills in listening, speaking, reading, and writing as well as pronunciation and terminologies. ESP has been conducted on an intensive basis, so students can enroll for more than one course per term.