Great Plains Lutheran High School is a Christian high school located in Watertown, South Dakota. Great Plains Lutheran High School is a Christian high school located in Watertown, South Dakota. THE ORGANIZATION MAKES GRANTS TO RECEIVING ORGANIZATIONS BASED ON REQUESTS FOR FUNDS TO SUPPORT RELIGIOUS PROGRAMS AND PROJECTS OF THE RECIPIENT ORGANIZATION. IN ADDITION, GRANTS ARE ALLOCATED TO SUPPORT RELIGIOUS EDUCATION IN THE FORM OF VARIOUS OUTREACH AND STUDENT ENDOWMENT PROGRAMS BASED ON NEED AS DETERMINED BY THE BOARD OF DIRECTORS.