摘要:This experimental research examines: (1) significant differences of corrections on grammar,sentence variety and developing details on the quality of the essay by Indonesian learners;and (2) different effect of corrections on grammar,sentence variety,and developing details on the quality of the essay.Treatments for each were served as follows: corrections on grammar for the group A (22),corrections on sentence variety for the group B (20),and corrections on the developing details for the group C (24).Data were analyzed using One-Way Anova Test.The study revealed: (1) As the teaching technique,corrections on grammar,sentence variety and developing details were significantly different;(2) Contribution on the differences respectively came from sentence variety (t=4.377),developing details (t=3.933),and grammar (t=3.756).Upon beta test,contribution varied from sentence variety (58.5%),developing details (46.5%),and grammar (38.6%).Evidently,sentence variety is the most dominant technique to improve quality of the essay up to 58.5%.