Classes receive hatchery bred eggs in the fall.
The students monitor the life cycle of the fish and the water quality until the end of the school year when they are released into an appropriate stream. I.S. 318 was the first N.Y.C. school to embark on this journey upstream. In 1997 a 10 gallon tank was rigged to simulate stream water. Submergible pumps were used to create flow and tubing was coiled through a small refrigerator to chill the water. The 250 gallons of cold water supported over 500 fingerlings many of which were released in May of 1999 in the Willowemoc and the Beaverkill.