"Harvard Education Letter" is published bimonthly at the Harvard Graduate School of Education. This issue of "Harvard Education Letter" contains the following articles: (1) Bringing Art into School, Byte by Byte: Innovative Programs Use Technology to Expand Access to the Arts (Patti Hartigan); (2) Differentiated Instruction Reexamined: Teachers Weigh the Value of Multiple Lessons (Laura Pappano); and (3) Improving Student Learning through Collective Bargaining (Adam Urbanski).