By Robin DearingToday marked the beginning of the end. The beginning of the end of Margaret's first-grade year of school and with that comes the parent-teacher conference. It was a year of ups and downs for our family, but it was a year of profound academic success for Margaret. Despite the concerns we have about Margaret's school (which I wrote about in this column) this has been a good year for her. She is achieving at a high level. She's a great reader, as witness by her and her partner, Cora's, success at the Battle of the Books. She doing well in math and all other subjects in school. Her teacher assures us that Margaret is ready to move on to the second grade. This is, of course, a great relief to her father and I. But we still have so many questions — like are we doing enough? Are we involved enough? Should we be working with her at home more? Is she being sufficiently challenged? We can't even decide if we should let her walk to school by herself yet (we live, literally, around the corner from the school). When is a kid old enough to cross the street by herself anyway? As Margaret grows up, I feel simultaneously pulled by feelings that I'm finally getting the hang of this whole parenting thing and feelings that I'm not doing enough to help her achieve and be a happy, successful person. I wish there was a parent-teacher conference for my performance as a mom.