Bring a Hartley naturalist directly to your classroom for an in-school lesson. Hartley naturalists provide engaging and interactive programs without all the additional challenges of traveling off school grounds. There are a variety of programs to choose from that enhance classroom curriculum while providing a fun and unique learning experience. Hartley defines a classroom as 35 people or less and one class period which is approximately 1.5 hours. One visit costs the following per number of classrooms: one classroom is $250.00, two classrooms cost $425.00, three classrooms cost $600.00, and three-plus classrooms cost $550.00. Call Hartley at (989) 865-6295 to schedule a traveling naturalist to visit your school.