Teachers across the United States are raising concerns that mainstreaming in classrooms is becoming increasingly difficult to manage without additional support, funding, and specialized staff. While educating students with disabilities alongside their peers remains an important goal, many educators say the current reality often falls short of the vision. Instead of questioning inclusion itself, teachers are pointing to overcrowded classrooms, staffing shortages, and growing behavioral and academic challenges that make it harder to meet every student’s needs. As schools continue expanding inclusive practices, the debate has shifted from whether mainstreaming matters to whether schools have the resources to make it successful.