The Finnish educational system has become a subject of wide interest during the 2000s due to the country's success in the OECD's PISA surveys. One might expect that the challenges of school psychology would also have been solved successfully. However, in reality, Finnish school psychology is suffering from the same types of problems as in many other countries: No large-scale shift from reactive work to active promotion and prevention has taken place, and the number of school psychologists is insufficient. In the present article we delineate critical factors that have hindered the more adequate and effective use of psychological expertise in Finnish educational system. Necessary actions for future development are outlined.