The National Assessment of Education Progress (NAEP) 2011, documented that seventy-three percent of students in grades 4th thru 12th are performing below the proficiency level for writing in the United States. Writing in the 21st century has become an essential part of middle and high schools' students' curriculum (NAEP, 2011). In order for students to improve to the proficient level of writing, students must increase in their ability to write. A Self-Regulated Strategy Development model (SRSD) was developed to help students improve in their academic writing abilities. SRSD has not been used to teach students business style writing such as creating business letters and filling out applications. This study used the SRSD model to help students improve their business letter writing and their ability to complete applications. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]