text:  This is All Things Considered from NPR News. I'm Elsa Chang. A huge challenge for students with disabilities is getting the services that they need at school. When they don't, many families seek help from the federal government. And right now, the Department of Education is swamped with a record number of discrimination complaints. The backlog is leaving families across the country waiting months, even years for help. NPR's Janaki Mehta visited one such family in central Georgia.