WASHINGTON — Republican leaders, turning away from significant gun control legislation, have shifted instead toward measures that would beef up security at the nation’s schools, hoping the push will quell public uproar over the recent massacre in Parkland, Fla.

But as students and parents from Marjory Stoneman Douglas High School continue their own organizing, the school safety strategy is unlikely to end the debate. Democrats and gun control advocates accused Republicans and the National Rifle Association of using school safety to divert attention from what they see as the real issue: the proliferation of guns that have been used in mass shootings at concerts, in movie theaters, on college campuses, in churches and at workplaces, as well as at public schools.

“This time, the gun rights crowd messed with the wrong community, the wrong kids and the wrong dad,” said Fred Guttenberg, whose 14-year-old daughter, Jaime, was killed at the school. He added, “I intend to be a part of breaking this gun lobby.”

The Republican-controlled House plans to vote next week on the STOP School Violence Act, a bill that would authorize $50 million annually for safety improvements, including training teachers and students in how to prevent violence and developing anonymous reporting systems for threats of school violence.