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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
during class hour
Grammar usage guide and real-world examplesUSAGE SUMMARY
"during class hour" is an acceptable phrase in written English.
You can use it to refer to the time when a class is in session, either in a specific place or generally. For example: "During class hour, the professor discussed the key points of the chapter."
Science
News & Media
Academia
Alternative expressions(20)
during plan time
during lecture time
during class period
during nonwork time
during school hours
in the classroom
during class hours
during instruction
during refreshment time
during school time
during one time
during work time
during class questions
while in class
in class
during the lesson
while attending class
during classroom time
during class time
while class is in session
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
1 human-written examples
The participants completed the anonymous questionnaire Survey of Adolescent Life in Västmanland 2008 during class hour.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
You can set up the device to silence its musical rings and chords after a certain hour of the night (or during class hours at school).
News & Media
The event did not happen on campus or during class hours, but when the coach saw the picture, her reaction was swift: two-week suspensions from the squad.
News & Media
On Tuesday, a proposal that would require public and charter schools to have an armed "protection officer" on school property during class hours passed a State House committee.
News & Media
The spring 2014 version of the course will focus on small bronzes; the course will include visits to New York collections, and prospective participants should be prepared to meet some weeks at the Metropolitan Museum of Art and at the Frick Collection during class hours.
Academia
A number of the sessions will be held in the Frick Collection, where a major exhibition on Sarto opens in October; prospective participants should be prepared to meet there and at other collections in the city during class hours.
Academia
Irving Independent School District v. Tatro, case in which the U.S. Supreme Court on July 5 , 1984 ruled (9 0) that, under the Education for All Handicapped Children Act of 1975 (EAHCA; now known as the Individuals with Disabilities Education Act), a school board in Texas had to provide catheterization services during class hours to a student with spina bifida.
Encyclopedias
The Security Cell-Lock – Stores cell phones during class hours [Textually].
News & Media
After obtaining authorization, contact was made with the teachers so that the questionnaires could be filled in during class hours.
Cellphones really must be a problem in South Africa if they have to confiscate them and lock 'em up during class hours.
News & Media
The policy at Archbishop Sentamu Academy has been designed to stop students from avoiding learning during class hours, the school said.
News & Media
Expert writing Tips
Best practice
When using "during class hour", ensure the context clearly indicates you're referring to the time when a class is actively taking place. It is more appropriate when you want to stress a specific period during the class, as opposed to the general activity of the class.
Common error
Avoid using "during class hour" when you actually mean "during school hours". "During class hour" refers to activities specifically happening within a lesson's timeframe, not general events occurring anytime within the school day.
Source & Trust
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "during class hour" functions as an adverbial phrase, modifying a verb or clause to specify when an action takes place. It indicates the timing of an event or activity in relation to a scheduled class session. Ludwig's examples show it often accompanies descriptions of administering questionnaires or specific activities.
Frequent in
Science
42%
News & Media
21%
Academia
18%
Less common in
Wiki
12%
Encyclopedias
3%
Formal & Business
3%
Ludwig's WRAP-UP
In summary, the phrase "during class hour" is a grammatically acceptable, though less common, way to specify when something occurs within a class session. As Ludwig AI points out, it is a valid expression. While "during class hours" is the more frequent choice, "during class hour" can be used to emphasize a specific event occurring during a lesson, primarily in scientific, academic, and news-related contexts. It's important to differentiate its usage from broader terms like "during school hours", which encompasses the entire school day. Remember to consider your audience and purpose when selecting between these options.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
in class
Shorter and more common way of expressing the same idea.
during class time
Replaces "hour" with "time", offering a slightly broader scope.
in the classroom
Focuses more on the location rather than the specific time.
while class is in session
More explicit and descriptive, specifying the active state of the class.
during the lesson
Substitutes "class" with "lesson", implying a specific teaching period.
during school hours
Broader term encompassing all hours of the school day, not just class time.
in class hours
Switches the position of "in".
while attending class
Focuses on the act of being present in class.
when the class is meeting
Emphasizes the scheduled meeting time of the class.
during lecture time
More specific, referring to the time dedicated to lecturing.
FAQs
What does "during class hour" mean?
The phrase "during class hour" refers to the specific time when a class is actively in session, focusing on activities or events that occur within that defined period.
Is it better to say "during class hour" or "during class hours"?
"During class hours" is generally more common and widely accepted. "During class hour" can be used, but it's less frequent and might sound slightly unusual to some.
How can I use "during class hour" in a sentence?
You might say, "The professor collected the assignments during class hour to ensure everyone was present."
What are some alternatives to "during class hour"?
Alternatives include "in class", "during class time", or "while the class is in session". The best choice depends on the specific context and the nuance you want to convey.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested