English is a very important high school subject for foreign language learners, for this reason they have high interest for cultivating and increasing their vocabulary acquisition level. English is one of the most difficult subjects in secondary school. For this reason students are interested for learning english. this action research study describes the process of developing and implementing a vocabulary study program that incorporates learning activities, techniques and strategies for increasing vocabulary acquisition level based on the research of experts in the field. The 8-week vocabulary study program was given to a group of sixth level (graduating senior) high school students in a public boys´ public high school in ecuador, who volunteered because they wanted to improve their english vocabulary level. In this work, some issues and concerns related to second language vocabulary teaching and learning.