A lesson plan is a logical sequence of detailed description of activities, goals, materials, methodology and assessment to teach a topic.The main purpose of a lesson plan is learning.Moreover, the designing of lesson plans is a challenging task, especially for pre-service teachers.This study aims to guide a group of pre-service teachers tailoring their lesson plans by including the student´s cultures, learning styles, the policies of education, and suitable and realistic situations.The research questions this study focuses to answer are how are pre-service English teacher inspired to design their lesson plans?How do pre-service teachers tailor their school students to reach the lesson plan goals?Collaborative action research steps helped pre-service teachers to reflect critically, design and implement the lesson plans while engaging their students throughout their English learning process.Results highlighted the importance to connect the designing of lesson plans with school student´s needs and the new policies about teaching and learning English as a foreign language, as well as with pre-service teacher´s experiences and knowledge in order to reach the goals and have flexible lesson plans.Implications of this study had to do with the impact pre-service teachers´ had on their conceptions and carried out of lesson planning, the changes and time devoting to prepare and implement the lesson plans, and the work they had with student´s struggles when accomplishing the learning goals.