The purpose of this essay is to identify effective ways of teaching English vocabulary at upper secondary level in Sweden. We have answered three research questions: -  In what ways do local English teachers at the upper secondary level teach vocabulary? -  How do local students at the upper secondary level perceive their acquisition and learning of English vocabulary? -  According to research regarding vocabulary acquisition, what is necessary to include when constructing an effective module for teaching vocabulary?  We gathered the data needed to answer the research questions by conducting interviews with both teachers and students as well as an independent study. The independent study investigated which of six pre picked vocabulary teaching methods gave the best results in a single English 6 class and was the most preferred by those students. The interviews as well as the independent study indicated that one of the most effective ways of teaching vocabulary is through context-based exercises. Our conclusion is that the students’ retention of new vocabulary may be directly connected to the amount of context in which the words are taught. Based on our findings, we have constructed frameworks for a series of lessons which focus on teaching vocabulary.