ELMHURST, Ill. (WLS) -- Controversy is bubbling up in the western suburbs over a school district's plan to conduct saliva tests on students opting for in-person learning. Some parents in District 205 have joined together, saying their kids should not have to do the tests to go back to class. "Why would we require the children to go through saliva testing?" Elmhurst parent Erin Stratton said. Starting next Friday, all 6th through 12th graders in Elmhurst District 205 who will be attending class or extracurricular activities in person must opt in to a saliva testing program, according to the school district website.