Here are some of the General Education Standards that Elementary Education majors are expected to meet:
Standard #1 for Professional Education reads:
"The educator demonstrates the ability to use the central concepts, tools of inquiry, and structures of each discipline he or she teaches and can create opportunities that make these aspects of subject matter meaningful for all students."
English 355 provides the basic knowledge of the "central concepts, tools of inquiry, and structures" of the discipline of English to prepare you to meet this standard for language arts.
Standard #1 for Early Childhood-Late Childhood (K-6th) reads:
"The kindergarten through sixth grade teacher demonstrates a high level of competence in use of the English language arts and knows, understands, and uses concepts from emerging literacy, reading, language, and child development to teach reading, writing, speaking, viewing, listening, and thinking skills, and to help all students successfully apply their developing literacy skills to many different situations, materials, and ideas."
English 355 helps you develop that "high level of competence" in language arts.