“…It is an issue about how to teach writing. Although the process-oriented instructional approach has been settled for the past several decades, issues and debates about the effectiveness of grammar instruction for L2 writers is still ongoing (Bell & Elledge, 2008;William & Severino, 2004;Thonus, 2004;Myers, 2003;William, 2002;Bookman, 2002;Cogie, Strain, & Lorinskas, 1999;Ronesi, 1995;Severino, 1993;Harris & Silva, 1993). The no proofreading policy is a procedural requirement for the process-oriented instruction that the contemporary writing center pursues and the debate of the effectiveness is the debate about explicit vs. implicit, directive vs. non-directive, product-oriented vs. process-oriented instructional styles (Kim, 2014).…”