First-grade teacher Cristy Herndon talks about the Food Pyramid with her students at North Shore Country Day School. | Brian O'Mahoney~for Sun-Times Media

First-grade teacher Cristy Herndon lets her students taste some of the cilantro grown in the Aquaponics system in her classroom at North Shore Country Day School. | Brian O'Mahoney~for Sun-Times Media

First-grader, Carissa Schultz, of Lake Forest, and Tessa Adamson-Tate, of Skokie, taste some of the cilantro grown in the Aquaponics system in their classroom at North Shore Country Day School. | Brian O'Mahoney~for Sun-Times Media

First-grade teacher Cristy Herndon talks with two of her students, Connor Gray, of Winnetka, and Isabelle Ornstein, of Winnetka, about what they might plant next, in the Aquaponics system in their classroom at North Shore Country Day School. | Brian O'Mah

First-grader, Connor Gray, of Winnetka, talks about the Aquaponics system in his classroom at North Shore Country Day School. | Brian O'Mahoney~for Sun-Times Media

First-grader Connor Gray, of Winnetka, and the Aquaponics system in his classroom at North Shore Country Day School. | Brian O'Mahoney~for Sun-Times Media

First-grader Isabelle Ornstein, of Winnetka, measures some of the plants, in the Aquaponics system in her classroom at North Shore Country Day School. | Brian O'Mahoney~for Sun-Times Media

The Dillar Street Theater, at North Shore Country Day School in Winnetka. | Brian O'Mahoney~for Sun-Times Media