The battle over how to teach reading has landed in court. With momentum shifting in favor of research-backed strategies known as the “science of reading,” states and some school districts have been ditching once popular programs amid concerns that they aren’t effective. In Ohio, the legal fight centers on a state ban of material that uses a common technique called three-cueing. The technique is a key part of the Reading Recovery program used in more than 2,400 U.S. elementary schools. The Reading Recovery Council of North America said in a lawsuit earlier this month that lawmakers infringed on the powers of state and local education boards.