Purpose: The study investigated the correlation between school communication and teachers' perceptions of the school's innovative climate in the Israeli education system during the coronavirus disease 2019 (COVID-19) crisis. Furthermore, this study examined the role of affective commitment and the role of sector (Arab or Jewish) in these correlations. Design/methodology/approach: First, Arab and Jewish teachers studying toward their MA degree were randomly selected from 2 higher education institutes in Israel, and then other teachers were selected using the snowball method through teacher groups on the Facebook social network and WhatsApp groups (N = 383). Findings: The findings revealed major differences between Arab and Jewish teachers. Among Arab teachers, the correlation between school communications and an innovative climate was found to be mediated through affective commitment, whereas among Jewish teachers, a direct correlation was found between the first two variables. The correlation between school communications and affective commitment was found to be stronger among Arab teachers than among Jewish teachers. Originality/value: The study results confirmed that school communication and affective commitment hold a significant predictive value in school innovation and highlight the importance of affective commitment in supporting innovation. The study adds to the body of research directed at identifying antecedents to innovative climate as well as studies examining the effects of school communications on affective commitment and innovative climate in a multicultural society, both in regular and emergency situations. The findings can also provide valuable insights for culturally sensitive and relevant education policy design and management in the post-COVID-19 period.