For Rachael Braunschweiger Potash, stripping her kids of their digital devices for seven weeks each summer is no cheap feat.  In fact, it’s a $40,000-plus investment. But to be able to gift her children a summer filled with outdoor activities and lifelong friendships the astronomical cost is worth it. Another priceless benefit — the influential networks of parents and alumni that can open doors for their kids for internships and job opportunities down the road. After months of planning, packing