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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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classes are not in session

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "classes are not in session" is correct and usable in written English.
You can use it to indicate that educational classes are currently not taking place, often during holidays or breaks. Example: "Please note that classes are not in session during the winter break, and will resume in January."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

7 human-written examples

I try to prioritise conferences during the times when classes are not in session.

News & Media

The Guardian

Some of it is donated to food banks, especially during the summer months, when classes are not in session.

News & Media

The New York Times

For a taste of university life, stay in a Cambridge University dorm room (cambridgerooms.co.uk) when classes are not in session.

After that, the Web site lists several local colleges as having dorm rooms available when classes are not in session, and a couple of hotels in Westchester County.

News & Media

The New York Times

If you can plan your trip when classes are not in session (and they are in session only about half the year), you may be able to land a room in student housing through oxfordrooms.co.uk.

LOS ANGELES — Classes are not in session at the University of Southern California, although anyone walking around the campus near downtown would have seen palm trees swaying gently in the breeze on a sun-splashed day sent straight from a recruiting manual.

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Human-verified similar examples from authoritative sources

Similar Expressions

51 human-written examples

Across the country, more than 21 million children qualify for free or reduced-priced lunch, but when classes aren't in session, these kids are at risk of going without food.

News & Media

Huffington Post

Classes were not in session Monday, but grief counselors were available to students and faculty on Monday afternoon.

News & Media

The New York Times

Although classes were not in session during summer vacation, teachers and students gathered in empty rooms, poring over class photographs for glimpses of lost friends.

News & Media

The New York Times

But classes were not in session, and the room where Sanders's event was being held, at a Marriott, was small.

News & Media

The New Yorker

Classes were not in session on Thursday because students were preparing for final exams, but there were still thousands of students, staff and faculty members on campus at the time, officials said.

News & Media

The New York Times
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Expert writing Tips

Best practice

Use "classes are not in session" to clearly communicate that scheduled classes are not currently taking place, especially when providing information about availability of resources or facilities.

Common error

Avoid using "classes are not in session" when the entire institution is closed or otherwise non-operational; "the university is closed" or "the school is on holiday" are more appropriate in such cases.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

85%

Authority and reliability

4.1/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "classes are not in session" functions as a declarative statement. It's used to communicate that formal educational activities are temporarily suspended. Ludwig's examples illustrate its use in informing about university breaks and holiday periods.

Expression frequency: Common

Frequent in

News & Media

73%

Science

17%

Formal & Business

5%

Less common in

Wiki

4%

Encyclopedias

0%

Social Media

0%

Ludwig's WRAP-UP

The phrase "classes are not in session" is a common and grammatically correct way to indicate that scheduled classes are not currently taking place. As illustrated by Ludwig, the phrase is frequently used in news and media, science and business contexts to inform about temporary breaks or suspensions in academic schedules. While alternative phrases such as ""classes are suspended"" or "no classes are taking place" can be used, "classes are not in session" provides a clear and widely understood message.

FAQs

What does it mean when "classes are not in session"?

It means that regularly scheduled classes are not currently being held, often due to holidays, breaks, or other planned interruptions in the academic calendar.

When is it appropriate to use the phrase "classes are not in session"?

Use it when you need to inform people that classes are not currently being held, for example, when explaining why certain facilities are unavailable or why schedules are different. You can also use "classes are suspended".

What's the difference between "classes are not in session" and "school is closed"?

"Classes are not in session" indicates that classes are not being held, but the school might still be open for other activities. "School is closed" means the entire institution is shut down, with no activities taking place. You may also say "there are no classes scheduled".

Are there alternative ways to say "classes are not in session"?

Yes, you can use phrases like ""classes are suspended"", "no classes are taking place", or "classes are on break" depending on the specific context.

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Source & Trust

85%

Authority and reliability

4.1/5

Expert rating

Real-world application tested

Most frequent sentences: