Reading by third grade is a hot topic. Dozens of state legislatures have passed laws aimed at improving early reading, many of them mandating retention if the job is not done by the end of grade 3. Everyone from philanthropists to publishers, from parents to the press, have fixed on it. And setting aside too many people's assumptions to the…

In all the elementary schools in the county, benchmark assessments were given six times a year in math and three times in reading; they were modeled after the questions anticipated on the Maryland School Assessment (MSA). Although results were sent to the school board, there were no cosmic consequences for the hourlong tests; they were supposed to…