* Elementary School: Around 12 years old (Grade 6 completion)
* Junior High School (formerly High School): Around 15 years old (Grade 10 completion)
* Senior High School: Around 18 years old (Grade 12 completion)
* College/University: Varies greatly depending on the degree program, but typically between 21 and 24 years old.
It's important to note that these are averages. Some students may graduate earlier or later due to factors like repeating a grade, transferring schools, or taking longer to complete their studies.