Students arrive at the Learning Center with their school group and are divided into small trail groups with approximately a one-to-five adult/student ratio. Teachers and chaperones are an integral part of Mountain School, participating fully in all activities. North Cascades Institute education staff design lessons, provide leadership and train instructors at Mountain School. Mountain School instructors include North Cascades Institute staff, graduate students enrolled in the Masters in Environmental Education program through Western Washington University and National Park rangers. All instructors have CPR and first-aid certification. In addition, all instructors have Wilderness First Responder (WFR) training, an advanced 80-hour first-aid certification.