Hello, I'm William, a native English teacher from California, USA.

I've taught English in Indonesia for over 25 years, including at Jakarta International School (JIS) and the University of Indonesia (UI), as well

as with Korean and Japanese communities in Jakarta, Surabaya, Bali, and Kalimantan. I teach

all ages and levels, from toddlers to adults, and I

teach a wide range of skills, including conversation, grammar, vocabulary, pronunciation, writing, listening, reading strategies, TOEFL, IELTS, TOEIC, and Cambridge exam preparation, business English, presentation skills, interview preparation, and intercultural communication.

I offer in-person classes in Jakarta, Bogor, Tangerang, and Cikarang, as well as online classes from anywhere in the world.

WhatsApp: 0851 7990 5980
KakaoTalk ID: billthieroff