Online instruction about integration of science and mathematics with middle-grades teachers: Four years in and aiming for sustainability

• This article illustrates the model used to develop an online graduate program for middle-grade science and mathematics teachers with a focus on science and mathematics integration.
• The challenges and revisions in the last 4 years of this program are discussed.
• The cohort system and the mandatory synchronous sessions played a key role in ensuring the quality of the program.

The purpose of this article is to illustrate the model used to develop an online graduate program called iSMART (Integration of Science and Mathematics and Reflective Teaching) and discuss the changes made in the program over the past 4 years. Starting in 2009 as its preparation year, iSMART is a unique project aimed to provide an online master's program for middle-grade science and mathematics teachers in Texas and is currently working with its 4th cohort of teachers. The authors identify the necessary infrastructure and provide examples for others to consider as they take on similar challenges in developing sustainable online programs with practicing science and mathematics teachers.