Although the desire for an education that emphasizes depth of understa
nding and meaningful learning has a long and distinguished history con
structivist reforms have not led to a comprehensive and coherent refor
m of educational practice in our schools. In fact, two previous ''grea
t reforms'' based on constructivist principles have failed during this
century. In this special issue of Educational Psychology Review, auth
ors focus on specific challenges faced in the current constructivist r
eform, including the need for viable intradisciplinary: interdisciplin
ary, and cross-disciplinary integration. Exemplars of the reality of p
rogress made in integrated, constructivist approaches in the classroom
follow. Diversity in our schools and classrooms and the challenge of
high standards for all students contribute to the need for an integrat
ed, constructivist approach that does not fail our students.