Request for Konza Prairie Schoolyard LTER Supplement. The Konza Prairie Schoolyard LTER (SLTER) program was initiated with supplemental funding from the LTER Program in 1998. Prior to this, the Konza Environmental Education Program (KEEP) had not included data collection activities for K-12 students, although the local school districts were taking advantage of the site to learn about the tallgrass prairie and the research projects carried out there.