The Covid-19 pandemic causes teachers to conduct limited face-to-face learning with online and offline (blended learning), impacting students' low self-regulated learning (SRL) and high academic procrastination (AP). This study aims to describe students' SRL and AP levels in the blended learning model and examine the relationship between the two. Eight hundred thirty students of State Senior High School in Ngoro Mojokerto, Indonesia, qualified as participants and provided responses to the SRL scale and AP scale instruments in the google form format distributed through the online student class platform. By analyzing the data descriptively and testing the Pearson product-moment correlation, the findings of this study are; 1). the level of SRL in senior high school students is the most dominant in the moderate category, 2). the level of AP in senior high school students is the most dominant in the moderate category. 3). there is a significant and negative correlation between SRL and AP in the blended learning model of senior high school students. The correlation results show that the lower the SRL level of senior high school students, the higher the level of student AP. The research results suggest that 1). the survey of SRL and AP levels of senior high school students needs to be investigated on a larger scale. 2). researchers and teachers need to increase SRL and reduce AP in students through developmental research and various counseling models and approaches.