My oldest child went from being in a "typical" school to a highly selective gifted magnet to, now, an academic magnet which is selective, but not as much so as the gifted one was. She was the most humble and grounded about her abilities at the gifted magnet, where she saw that she was not the smartest fish in the sea. At the "regular" school, she developed some egotistical "School is meaninglessly easy and I'm the best one at it" thinking, which I am now starting to see returning in a less intense environment.