The Literacy Design Collaborative (LDC) was created to support teachers in implementing college and career readiness standards. Teachers work collaboratively with coaches to further develop their expertise and design standards-driven, literacy-rich writing assignments within their existing curriculum across all content areas. Findings from multiple sources reveal positive results for the LDC intervention. Participants across all groups reported positive attitudes toward LDC and perceived a positive impact on student outcomes. Additionally, analysis of student outcomes confirmed participants' positive views. We found LDC had statistically significant effects on Cohort 2 middle school students' English language arts (ELA) performance, with an effect size of .15 for students receiving LDC instruction in all three core content areas: ELA, science, and social studies/history.