What is a High Schools?
High schools (secondary schools) are the final stage of K–12 education, typically grades 9–12. Students earn credits toward a diploma, choose from a wide range of courses and electives, and prepare for college, careers, or both — with athletics, arts, clubs, and activities a big part of the experience. High schools include comprehensive public schools plus many specialized types.
History & origins
The American high school grew into the near-universal capstone of public education, expanding from a small elite institution to one that serves nearly all teens and prepares them for college, work, and citizenship.
Philosophy & approach
High schools aim to give students the knowledge, skills, credentials, and readiness for adult life — academically, and increasingly through college-prep, career-technical, and enrichment pathways — while supporting their growth into young adults.
Curriculum & academics
Students take courses by subject department, earning credits toward graduation, and often choose among honors, AP, IB, dual-enrollment, and career-technical options plus many electives. High schools offer counseling for college and careers, and a full range of athletics, arts, and activities.
The classroom & school day
Students move between subject-specialist teachers and departments, manage their own schedules and credits, and take part in a wide array of extracurriculars. There's substantial independence and choice.
Grade levels & structure
High schools serve grades 9–12 (some 10–12, with a separate 9th-grade or junior high). Ages are roughly 14–18.
Admissions & enrollment
Public high schools are free (by attendance zone, with charter, magnet, and selective/exam options by lottery or admission); private ones charge tuition and admit by application. Many specialized high schools (STEM, arts, early college, and more) exist.
Costs & financial aid
Public high schools are free; private ones charge tuition, often with aid.
Accreditation & governance
Public high schools meet state standards and award recognized diplomas; private ones seek accreditation. Look at academics, course options, college/career outcomes, activities, and culture.
Is a High Schools right for your child?
Nearly every teen attends high school. Families weigh public vs. private, comprehensive vs. specialized, and program strength (AP/IB, CTE, arts, athletics, early college) against the student's goals. Many specialized high-school types are covered in these guides.
How it compares to other schools
High schools are defined by grade level (the final K–12 stage), not one philosophy — so a high school can also be public, charter, magnet, private, STEM, arts, IB, Catholic, and many other types described here.
Finding High Schools
Ready to explore specific schools? K12 Academics lists high schools and other schools across the country.
Key facts
- StageFinal stage of K–12 (secondary)
- GradesUsually 9–12; ages ~14–18
- GoalDiploma; readiness for college and/or career
- FeaturesDepartments, credits, electives, AP/IB/CTE, athletics & activities
- CostFree (public) or tuition (private)
Where to learn more
To learn more and find specific schools: