This research aimed to study current situations, problems and needs for the development of an English teaching evaluation model focusing on task-based learning to develop English writing ability and creative thinking in the language; to create the development of the English teaching evaluation model, implement and evaluate the model designed. The research tools consisted of a structured interview form, an English writing ability test, creative thinking in language tests, an English teaching evaluation model focusing on task-based learning to develop English writing ability and creative thinking in language format, and a satisfaction questionnaire towards the model designed. Descriptive statistics were employed in the study including percentage, mean, standard deviation and F-test (One-way MANOVA). The results revealed that the model consists of 7 elements: Principle, objectives of the learning and evaluation, learning English area and learning indicators, selecting method of instruction based on the evaluation, setting performance goals based on the task/work, formulating the evaluation criteria and evaluation report. This is in addition to the 6 steps of evaluation: assessment preparation, designing learning activity, teaching and evaluation, teaching operation, conclude the assessment and feedback from related parties. On the other hand, results of the implementation revealed that the students who use this model obtained the average score, significantly at 0.05 level on English, writing ability and creative thinking in language which was higher than those who did not use the model. Based on the evaluation results, the effectiveness of the model was found to be at a high level overall and for each aspect.