This study examined the extent to which mothers' trust toward the classroom teacher of their child in first grade is related to observed teaching practices in Finland and Estonia. Sixty-six teachers (32 in Finland, 34 in Estonia) were observed using the Early Childhood Classroom Observation Measure (ECCOM; Stipek & Byler, 2004). Mothers in Finland (n = 266) and in Estonia (n = 348) filled in questionnaires measuring their trust in their child's first grade teacher. The connection between mothers' education, child gender, and classroom size in relation to mothers' trust was also investigated. The results of multilevel modeling showed that mothers in both countries trusted more in teachers who were characterized by a higher level of child-centered teaching practices than teacher-directed teaching practices. Furthermore, Estonian mothers showed greater trust in more experienced teachers. The results emphasize the importance of teaching practices in promoting mothers' trust in their child's teacher. (Contains 2 figures and 4 tables.)