It depends on where you live and the circumstances. Generally speaking, you can withdraw at 18 regardless of any other considerations. If you're younger than that, you can only do so under specific conditions which vary by state.
They should notify the school of their intent to withdraw from all classes.
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At the age of 18 years old, the person is no longer considered a child. They are now considered an adult and would not need to be emancipated to do anything, including dropping out of high school.
The answer to your question is age 18....
Each state has a minimum age and different requirements for withdrawing from public school. It most cases, you have to be at least 17 or 18 years old. If you are withdrawing to go to home school, you must submit an application to the state.
Only with the consent of a parent or guardian.
Old Bend High School was created in 1924.
Old Watertown High School was created in 1913.
Old Mill High School was created in 1975.
Old Dillard High School was created in 1924.
Old Sutton High School was created in 1906.
Old Piqua High School was created in 1914.