Early intervention is key to preventing academic failure and referral to special education. General educators are responsible for providing primary instruction for students at risk for failure; however, the training they receive related to specific instructional strategies for these students is often insufficient (e.g., 1-day workshops). Alternative forms of professional development that include a combination of in-service and follow-up support have shown more promise in promoting changes in teaching behaviors. This study examined the effects of in-service support plus coaching on kindergarten teachers' accurate delivery of group instructional units in math. Teachers were trained to use a combination of whole-class instruction strategies, including model-lead-test for introducing new concepts and correcting errors, choral responding, and response cards. Results indicated that all teachers improved their delivery of instruction after the in-service training, with a second level of growth achieved after coaching. Teachers also reported high levels of satisfaction using the strategies.