Training courses for teachers of English as a Second Language (ESL) at the elementary and secondary levels, implemented in Brunei in 1989, are described, and proposals for a new teacher certification level are examined. The first course leads to a diploma in elementary/secondary ESL teaching, and is characterized by both written and practical work done only internally, a series of small essay examinations replacing the traditional final examination, and content and methods emphasizing the teaching of young learners. It is intended to upgrade the skills of experienced teachers. A certificate course was designed for inexperienced ESL teachers, especially non-native speakers, consisting of language improvement and methodology components. Two proposals for training of qualified teachers without formal training in ESL instruction include one for training oriented to specific age groups (5-10, 11-14, and 15-17 years) and one that makes no distinction between native English-speaking and non-native teachers. Both are assessed and found inadequate. These and other considerations in designing ESL teacher training curricula are outlined. (MSE)