Parents and educators concerned with the quality of education in Canadian schools have been subjected to a concerted campaign (through editorials, columns, and letters to the editor in major dailies and magazines, as well as a spate of books with alarmist titles) aimed at convincing them that the lack of adequate testing represents a major shortcoming and a stumbling block to educational reform. Provincewide and nationwide standardized achievement tests are offered as an indispensable tool to understand what works and what does not, to let parents know how schools are doing and how well their children are performing, and to make teachers and school boards accountable. Provincial education authorities are fmding it increasingly difficult to resist the pressure, with Ontario the latest to jump on the testing bandwagon. However, although concerns about school curricula and about the best methods for testing student learning and performance are legitimate, the belief that standardized achievement tests are part of the solution to many ills allegedly afflicting our educational system does not stand up to the increasingly clear evidence of the many problems associated with the construction and administration of these tests, as well as the misuse and abuse of test scores. Far from being a panacea, this approach has proved to be fraught with dangers and adverse effects, from a narrowing of the curriculum to overemphasis of routine processes at the expense of higher learning skills, with virtually no empirical support for the purported benefits. With Canadian students facing the risk of being subjected to the same abuses as their U.S. counterparts, this paper reviews recent contributions and attempts to alert educators and polieymakers to the serious deficiencies of this type of testing.