Many general education classroom teachers and English as a Second Language (ESL) specialists find themselves sharing classroom space as well as responsibilities for planning instruction, teaching, and assessing English Language Learners (ELLs). This service delivery model may be called pushin, team teaching, inclusion, or co-teaching for ESL. Emerging literature on collaborative teaching practices to support ELLs (Pardini 2006; Zehr 2006), and personal experiences as ESL co-teachers and professional developers, have led us to devise guidelines to jumpstart co-taught lessons.