I t was one of the charter school’s big selling points: ‘the portal.’ More than a year ago, I sat in an informational meeting about what this particular educational choice might have to offer my son that our public option did not. A foreign language would be offered starting at seventh grade we were told, but in advance of that, the assembled parents were told we could enjoy 24/7 access to our children’s grades in real time. The daily performance of our student—homework, quiz and test scores—could be viewed through an online window at our convenience. “Here you can always know what’s going on with your child,” one of the school’s representatives soothed we, the anxious. I remember being nonplussed about the service at…