New York is poised to take an important step to improve student achievement by expanding learning time for students attending high-poverty, low-performing schools. Recent district- and state-level investments in expanded learning time--a promising strategy to close achievement and opportunity gaps--will give students more time to learn core academics but not at the expense of extracurricular activities such as music, art, and sports. Expanded learning time also provides teachers with more time for collaboration, planning, and professional development. What's more, New York's strong history of working with community partners will help support schools that decide to significantly lengthen the school day. Other school districts and states that are interested in boosting student performance, closing achievement gaps, and expanding enrichment opportunities should follow New York's example and consider a significant investment in expanded learning time. Contains endnotes.