With social media’s endless appetite for fresh outrage, an alleged misstep by a teacher in Oregon or New York is captured on student cell phones and served up almost instantly on Facebook. I discuss the ramifications of viral classroom videos and whether we should be making any judgments based on a few seconds of images. Georgia students are deep into testing, which is more stressful than usual because the state rolled out new exams that many districts are administering online. In a guest column, a teacher says the test maker ought to be held accountable for technical glitches that added to the stress. Readers share their views on testing.