Conserve School is a semester school for environmentally and outdoor minded high school students located in Land O' Lakes, Vilas County,Wisconsin, United States. For seventeen weeks students pursue a program of environmental studies and outdoor activities that is designed to deepen their love of nature, reinforce their commitment to conservation, and equip them to take meaningful action as environmental stewards.
The program interweaves college-preparatory academics with:

• the study of environmental history, nature literature, and the science of conservation,
• environmental service work,
• exploration of careers related to conservation,
• training in teamwork and leadership, and
• engagement with the outdoors.

Designed primarily for high school juniors, Conserve School incorporates the flexibility to accommodate advanced sophomores.
 
With the passing of James Lowenstine in 1996, the building of his dream, a school to inspire conservation minded environmental stewards, began. Following the directions Mr. Lowenstine left in the Conserve School Trust the Conserve School Board of Trustees began the initial planning for Conserve School. Mr. Lowenstine directed the Trustees to create a school with a curriculum that would include: instruction in reading, writing, arithmetic, and nature study. The nature study was to include a focus on the ecology of unspoiled forest and lake areas such as Conserve School’s Lowenwood campus. In addition the school should include instruction in outdoor sports includingskiing, use of snowshoes, archery, ice skating, target practice, swimming, fishing, boating, camping, sledding, methods of survival in unexplored areas, and other outdoor activities.
From the fall of 2002 until the spring of 2010 Conserve School operated as a four-year college preparatory school. Due to financial concerns, the school switched to its current semester school model in the fall of 2010. The decision to transition the school was legally challenged by a group of concerned parents, alumni, and community members, as well as by the Culver Educational Foundation.^[11]
On August 21, 2010 the first semester school semester began with 48 students from 12 different states.