Master thesis English teaching methodology: Using writing portfolios to improve grade 10th students’ writing skill - An action research project in a high school in Hadong district

This research was carried out with an aim to find out how the teacher can apply writing portfolios to improve students’ writing skills and discover the effectiveness of the application of writing portfolios on students’ writing performance in four assessment criteria namely task achievement, coherence and cohesion, lexical resource and grammatical range and accuracy.