How Old Are 12th Graders? - OnlineCourseing

Assuming they start kindergarten at the typical age of 5 years, 12th graders in the United States (Year 13 in the UK) are typically 17 or 18 years of age.

12th Grade Homeschool Curriculum

Silicon Valley Youth

Vantage Academy

12th Grade School Online (High School)

12th Grade School Online (High School)

Titan Educations

Edtechenergy Educational Technology Coaching for Teachers

How Old Are 5th Graders? - OnlineCourseing

Excel Your Education

Hawaii Elementary & Middle School Administrators Association

12th Grade School Online (High School)