41 Educational services, namely, providing courses of instruction at the college-preparatory high school level; educational services, namely, providing courses related to marine, nautical science, engineering, and astronomy at the college-preparatory high school level; educational services, namely, providing courses related to marine and nautical science at the college-preparatory high school level using a schooner; educational services, namely, providing courses related to agriculture, aquaculture, and sustainable food production at the college-preparatory high school level