High school is the correct spelling, and it is written as two words. Highschool as one word is not accepted in standard English.
Quick answer: write high school as two words, keep it lowercase in general use, and capitalize it only when it is part of a proper name.
High School or Highschool: The Quick Answer
Is High School One Word or Two?
High school is two words. Dictionaries and style guides list it as an open compound, which means the words stay separate.
Is Highschool Ever Correct?
In standard writing, no. You may see it in a brand name, a username, or a quoted source, but it is not the accepted form.
The Correct Spelling at a Glance
| Form | Correct? | Note |
| high school | Yes | Standard two word spelling |
| highschool | No | Common online error |
| High School | Sometimes | Only in a proper name or title |
| high schools | Yes | Standard plural |
What Does High School Mean?
High School Definition
A high school is a school for older students that follows elementary or middle school. It usually leads to a diploma and prepares students for college, training, or work.
What Grades Are Considered High School?
In the United States, high school typically covers grades nine through twelve. Some systems start at grade ten, so the exact range varies by district.
High School in American English
In American English, high school is the everyday term for secondary education. It appears in phrases such as high school diploma and high school sports.
High School in British English
British English usually says secondary school for the same stage. High school is used in some schools and in discussions of the American system.
Why Is High School Written as Two Words?
High as a Descriptive Word
In this phrase, high describes the level of the school. It works like an adjective placed before the noun school.
Understanding Open Compound Words
An open compound is a pair of words that act as one idea but stay separate on the page. Other examples include ice cream, middle school, and post office.
Why Highschool Is Not the Standard Form
Highschool would be a closed compound, and dictionaries do not record it that way. Standard usage has kept the two words apart for a long time.
Why Seeing Highschool Online Causes Confusion
Social media, search queries, and usernames often drop spaces. Because readers see the one word form so often, it can start to look correct even though it is not.
High School vs Highschool: Key Differences
Spelling and Word Count
High school has two words and a space. Highschool runs them together and is treated as an error.
Meaning and Usage
Both aim at the same meaning, but only high school is accepted in print and in formal writing.
Formal vs Informal Writing
Formal writing requires high school. Even in casual writing, the two word form is safer and avoids looking like a typo.
Which Form Should You Use?
Use high school in emails, essays, resumes, articles, and applications. It is the correct choice in nearly every situation.
Is Highschool a Word?
Why Highschool Appears Online
Quick typing, hashtags, and brand names account for most uses. Autocorrect and search habits spread the pattern further.
Is Highschool Accepted in Standard English?
No. Major dictionaries and style guides use high school, and editors will change highschool to match.
What to Write Instead of Highschool
Write high school with a space. If you need a single token for a hashtag or username, treat that as a special case and not as standard spelling.
Should High School Be Hyphenated?
Is Hyphenated High School Correct?
Generally, no. Most style guides treat high school as an established open compound, so it does not need a hyphen between the words.
When High School Appears Before Another Noun
Writers often wonder whether a hyphen is needed when high school acts as a modifier. In common usage, phrases such as high school student and high school teacher stay open.
High School Student vs Hyphenated High School Student
The open form, high school student, is the standard choice. A hyphenated version may appear in some publications, but it is not the typical style.
Why Style Guides May Differ on Hyphenation
Style guides set their own rules for compound modifiers. If you write for a publication or school with a house style, follow that guide for consistency.
High School Capitalization Rules
When to Write High School in Lowercase
Use lowercase when you refer to high school in general. Example: She finished high school in June.
When to Capitalize High School
Capitalize it when it is part of the official name of a specific school. Example: He attended Roosevelt High School.
High School as Part of a Proper Name
In a proper name, every main word is capitalized. This applies to the full official name, such as Central High School.
High School in Titles and Headings
In title case headings, capitalize both words. In sentence case headings, follow normal sentence rules and lowercase the phrase unless it is a proper name.
High School in Common Phrases
High School Student
A high school student is a person enrolled in high school.
High School Teacher
A high school teacher instructs students in grades nine through twelve in most US schools.
High School Graduate
A high school graduate is someone who has completed high school.
High School Graduation
High school graduation is the ceremony or event marking completion of the program.
High School Diploma
A high school diploma is the credential awarded after finishing the required courses.
High School Football
High school football refers to the sport played between school teams, and it stays lowercase unless a proper name is involved.
High School Education
High school education describes the learning that takes place during these years.
Plural and Related Forms of High School
What Is the Plural of High School?
The plural is high schools. Only the second word changes.
High Schools vs Highschool
High schools is the correct plural, and highschools is not standard. The same two word rule applies in the plural.
Is High Schooler One Word?
High schooler is commonly written as two words in dictionaries and style guides. The closed form highschooler is not standard.
High Schoolers: Correct Usage
High schoolers is the plural. Example: The high schoolers volunteered at the food drive.
High School Example Sentences
High School as a Noun
My sister is in high school. He still remembers his first day of high school.
High School Before Another Noun
The high school band performed at the festival. A high school senior gave the opening speech.
High School in Academic Writing
The study followed high school students over four years to measure changes in reading skills.
High School in Everyday Conversation
We went to the same high school, but we never met until college.
High School in a Resume or Application
Graduated from Lincoln High School with honors. Completed a high school diploma with a focus on science.
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Common High School Spelling Mistakes
Writing Highschool as One Word
This is the most common error. Fix it by adding a space between high and school.
Adding an Unnecessary Hyphen
Writers sometimes place a hyphen between high and school out of habit. In standard usage the two words stay open with only a space.
Incorrect Capitalization
Writing High School in the middle of a sentence is a mistake unless it is part of a proper name.
Confusing High School With Secondary School
The two terms overlap, but they are not always interchangeable. Choose the one that fits your audience and region.
High School vs Secondary School
What Is Secondary School?
Secondary school is the general term for the stage of education after primary school. It is common in the United Kingdom and many other countries.
Are High School and Secondary School Synonyms?
They are close in meaning but differ by region and context. High school is typical in American English, while secondary school is typical in British English.
Differences in US and UK Usage
In the US, secondary school is a broad term and high school is the everyday one. In the UK, secondary school is the everyday term.
Which Term Should You Use for an American Audience?
Use high school. It is the natural choice for readers in the United States.
How to Remember the Correct Spelling
The Two Word Rule
If you can say high and school as two separate ideas, write them as two words.
A Simple Memory Trick
Think of other open compounds, such as middle school and elementary school. High school follows the same pattern.
High + School = High School
Treat it like simple addition: two words combine in meaning but keep a space between them.
Conclusion
High school is the correct form in standard English. Use two words in general writing, and avoid highschool in formal text.
Keep it lowercase unless it is part of a proper name, and remember the two word spelling.
Frequently Asked Questions
Is high school one word or two?
High school is two words.
Is highschool grammatically correct?
No. Highschool is not accepted in standard English.
Is a hyphenated high school correct?
Generally no. High school is an open compound and does not need a hyphen.
Should high school be capitalized?
Only when it is part of a proper name, such as Lincoln High School.
Is high school a compound word?
Yes. It is an open compound written with a space between the words.
What is the plural of high school?
The plural is high schools.
Is high schooler one word?
It is usually written as two words, high schooler.
Is high school American or British English?
High school is the standard American term. British English usually says secondary school.
What is the difference between high school and secondary school?
They overlap in meaning, but high school is American usage and secondary school is more common in the UK.
Should I hyphenate high school student?
No. High school student is the standard open form.
Why do people spell high school as highschool?
Fast typing, hashtags, and usernames often drop spaces, which spreads the error.
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