In most countries, people usually finish high school between the ages of 17 and 19. The exact age at which students complete high school can vary depending on the country's education system and individual circumstances.
In the United States, for example, high school typically covers grades 9 to 12, and students often graduate at age 17 or 18. However, students may enter kindergarten at age 5, making the entire duration of primary and secondary education 13 years.
In other countries with different educational structures, the age at which students finish high school may vary. Some countries have a three-year high school program, while others may have a four-year program.
It's essential to remember that education systems can differ significantly from one country to another, so the age at which people finish high school can vary globally.