This paper aims to evaluate the preservice teachers' teaching performance in a blended field experience during the quarantine of COVID-19. An exploratory sequential mixed method approach was adopted using Strength, Weaknesses, Opportunities, and Threats (SWOT) analysis as a qualitative tool and quantitative data collected using a teacher evaluation rubric that merged the INTASC standards in the Danielson domains. The results show that using SWOT analysis positively impacts teachers' performance: they understand how to use the external environment (seizing opportunities and avoiding threats) to control the internal environment (enhancing strengths and removing weaknesses).