In the United States, a high school is a school for children usually aged between fourteen and eighteen. an 18-year-old inner-city kid who dropped out of high school. In the U.S., any three-to six-year secondary school serving students about 14-18 years of age. Four-year schools are by far the most common; their grade levels are designated freshman (9th grade), sophomore (10th), junior (11th), and senior (12th). Comprehensive high schools offer both general academic courses and specialized commercial, trade, and technical subjects. Most U.S. high schools are tuition-free, supported by state funds. Private high schools are usually classed as either parochial or preparatory schools
A secondary school In the US some high schools take children from age 12 to 18 years; while in other cases the pupils move from junior to senior high schools at the age of about 15 years Some junior high schools are also called "middle schools"
A one-year course in high school equals one unit So, in other words one unit is the same as one credit Most courses are one semester long and are equal to 5 units
A secondary school offering the final year of high school work (Grade 12) necessary for graduation All high schools in Utah include minimally grades 10 through 12
A secondary school offering the final years of high school work necessary for graduation, usually including grades 10, 11, and 12 (in a 6-3-3 plan), or grades 9, 10, 11, and 12 (in a 6-2-4 plan)