Not a theological school but the daily set of instructions on Mormonism offered to high school students. Often the LDS church will build a building close to a high school in which they conduct these classes. These seminary buildings become the social center for many LDS students.
Dictionary of "Mormonese"
Stop talking past each other. Gain a better understanding of the words that are unique to Mormonism and the differences of shared terms between Mormonism and Christianity.