This paper aims to examine the actualities of the teachers’ cooperation by clarifying the content of the team support related to the school non-attendance problem and the relation between organizational characteristics of the school and help-seeking preferences. The questionnaire to 245 teachers of 13 high schools contains the following 4 categories: (1) team supporting type (e.g., single teacher activities), (2) attributes of the teachers, (3) organizational characteristics of the school (e.g., the teachers’ cooperation), and (4) help-seeking preferences. The team supporting activities were related to teachers’ cooperation, informational level, help-seeking preferences. Female teachers were more likely to prefer to practice the team supporting activity than male teachers. Finally, the proposal concerning the teachers’ cooperation to the school non-attendance problem was suggested.