The writing’s on the wall — if you can read it. Sobering national test results show more high school seniors are struggling with math and reading than at any point in recent decades, with Education Secretary Linda McMahon calling out a “devastating trend” Tuesday. The National Assessment of Educational Progress (NAEP) — commonly referred to as the Nation’s Report Card — showed just 35% of high school seniors were proficient in reading, the lowest score since the assessment began in 1992. The math score for 12th-graders was even worse, with just 22% achieving proficiency, the lowest point since the current...