It’s one of the most frequent pauses in digital writing: do you hit the spacebar, or do you let the two words merge? While you see highschool trending on social media and in casual hashtags, the professional world has a much stricter standard.
If you are writing a resume, an academic paper, or a professional email, the difference between these two isn’t just a style choice—it’s a mark of literacy.
Table of Contents
1. The Quick Answer: One Word or Two?
The short answer is: High school is always two words.
- Correct: High school (Open compound noun)
- Incorrect: Highschool (Closed compound noun)
In standard English, “high” functions as an adjective modifying the noun “school.” Just as you wouldn’t write middleschool or elementaryschool, you should never merge high school.
2. Why “Highschool” is Trending (and Why It’s Still Wrong)
If it’s grammatically incorrect, why does highschool appear everywhere from TikTok captions to indie movie titles?
The “Compound Creep”
English has a history of “Compound Creep,” where common two-word phrases eventually merge. Back yard became backyard; week end became weekend. Many younger writers assume high school is simply in the middle of this evolution.
The Social Media Effect
In the world of hashtags (#highschool), spaces aren’t allowed. This has trained a generation of writers to see the word as a single unit. However, major style guides (AP, MLA, Chicago, and Oxford) have not moved an inch: it remains two words.
3. The Only Exception: Proper Nouns
There is exactly one situation where you might write “highschool” or “High-School,” and that is when it is part of a Proper Noun.
- Brand Names: if a specific company or app is named “HighSchool.com,” you must respect their branding.
- Historical Titles: Some older international institutions or specific legal documents might use archaic hyphenated versions like “High-School.”
Otherwise, if you are referring to the institution of secondary education, keep the space.
4. Capitalization and Hyphenation Rules
Once you’ve mastered the space, you need to handle the formatting.
When to Capitalize
- Lowercase: Use lowercase when speaking generally. (“I hated high school.”)
- Uppercase: Use uppercase only when it’s a specific name. (“I graduated from Westside High School.”)
When to Hyphenate
You should almost never hyphenate “high school” as a noun. However, some style guides suggest a hyphen when it acts as a compound modifier before a noun—though even this is becoming rare.
- Noun: “He is in high school.”
- Adjective: “He is a high-school student.” (Optional, but most modern editors prefer “high school student” without the hyphen for cleaner visuals).
5. Comparison: High School vs. Other Levels
To remember the rule, look at how we treat every other level of education. Consistency is the best mnemonic device.
| Correct (Two Words) | Incorrect (One Word) |
| High school | Highschool |
| Middle school | Middleschool |
| Grade school | Gradeschool |
| Art school | Artschool |
6. Professional Impact: Why It Matters for SEO
For content creators and businesses, using “highschool” can hurt your Expertise, Authoritativeness, and Trustworthiness (E-A-T) scores.
- Search Engines: Bing and Google recognize “highschool” as a common misspelling. While they will still show you results for “high school,” using the misspelling in your headers signals to the algorithm that your content is “low-quality” or “unfiltered.”
- User Trust: For educational consulting or tutoring sites, a misspelling of the word “school” is an immediate bounce-rate trigger for parents and students.
Summary Checklist
- Is it a formal document? Use high school.
- Is it an adjective? Use high school (or high-school if you’re a traditionalist).
- Is it a hashtag? Use #highschool.
- Is it a specific name? Follow the brand’s spelling.
FAQ: High School or Highschool?
Is “highschool” ever correct in British English?
No. Whether you are in the US, UK (where they often say “secondary school”), Canada, or Australia, the term is always two words.
What about “high schooler”?
Even when referring to a student, it remains two words: high schooler.
Does my phone’s autocorrect change it?
Most modern smartphones will not “correct” highschool because it is so common in informal text, but they will offer “high school” as the suggested correction. Always take the suggestion!
