The purposes of this research were: 1) to construct exercises for developing Prathomsuksa 3 students Creative writing skills, including finding the efficiency of the exercises to meet the standard criterion of 80/80. 2) to compare students writing ability before and after the creative writing exercises. The sample for this study was 40  Prathomsuksa 3 students, first semester, 2007, Kabinjariyakom School, Prajinburi province.
	The instruments used in the experiment were 15 creative writing exercises, lesson plans, three subjective paper tests on creative writing ability, pre-test and post test. The study was carried out for 5 weeks, 3 periods a week. The statistical methods employed for data analysis were mean, percentage, standard deviation and t-test.
	The findings of the study were:
	1.  The efficiency of the creative writing exercises was 85.98/89.05, this was higher than the standard criterion.
	2.  Students creative writing ability after the experiment was statistically higher at .05.
