I should have known. I don’t know why I was surprised, or why I cried for 2 days and saw my life as over, but I did. My 4 year old failed preschool. For 8 1/2 months, I dropped him off and picked him up 3 days a week with nary a peep from his teacher. It was now mid-May, and I was weeks away from doing the Happy Dance that all my kids would be in school next year. And then she uttered the dreadful words, “He’s not ready for kindergarten.” Not ready? Not ready? You mean I’ve b