The world economic situation from 2010 to 2012 was full of uncertainties. However, the uncertainty of the global economic situation is expected to remain at a high level and have an impact on falling world commodity prices as a result of weakening world trade. In addition, significantly the current business environment is undergoing complex changes. Thus, business uncertainty (turbulence) is increasingly real. This study uses the literature method in examining more deeply the problems that will be discussed. This study describes the importance of external analysis in facing a recession. The results of the study show that the company or organization assisted by the company can formulate the right strategy by considering the threats and opportunities from the recession problem that has occurred.

21st century teachers are required to be professional, required to have a combination of 4 main skills, namely: academic, professional and social skills to educate and teach students effectively and efficiently. Increasing teacher academic competence is very important in supporting students' preparation for the 21st century generation, in addition to other competencies. Academic competency includes mastery of material and how to convey that material effectively and efficiently. This Community Service Activity (PKM) aims to improve teacher academic competence through training and mentoring activities with Project Based Learning (PJBL) and Problem Based Learning (PBL) learning models. The PKM method used is a service learning process. Participants in PKM activities are teachers from SMAN 1 Purwosari, Pasuruan Regency. Data was collected using techniques: observation, interviews, tests and questionnaires. The results of PKM activities show an increase in teacher academic competence regarding 2 learning models (PJBL and PBL). The teacher's response after participating in PKM activities was very good and positive and they even recommended similar activities in 2025.