The aim was to examine reading comprehension among elementary school students in two shallow orthographies, Estonian and Finnish. Participants were 619 Estonian children (50% boys) and 292 Finnish children (52% boys) whose reading comprehension was assessed in first, second, third, and sixth grades. The results showed that reading comprehension among Estonian and Finnish children was at a similar level by the end of first grade but Finnish children started to have better performance from second grade onward. These findings suggest that the roots of Finnish students' strong reading skills are nurtured from the very beginning of elementary school. The potential cross-country differences in reading instruction are discussed.