Used and loved by millions
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
on this class
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "on this class" is not correct in standard written English.
It may be intended to refer to a specific class or course, but the correct preposition would typically be "in" rather than "on." Example: "I have learned a lot in this class."
⚠ May contain grammatical issues
Science
News & Media
Encyclopedias
Alternative expressions(6)
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
60 human-written examples
When running with instrumentation turned on, this class is instantiated before any of the application code, allowing to monitor all the interaction the system has with the application.
This is due to the fact the Lufthansa had one of the poorer offerings on this class of service".
News & Media
What might happen if the tax rates on the working class and low-income workers placed an additional burden on this class?
News & Media
Several states report that they save more on acid reflux drugs than any other category; Vermont, a state with half as many people as the Bronx, reports saving more than $2 million a year on this class of medicines alone.
News & Media
Noting that he is a scientific adviser to Sirtris, a company developing drugs that activate sirtuins, Dr. Kahn said that "certainly drugs that act on this class of proteins have the potential to have major effects on human disease".
News & Media
On this class of work was lavished some of the finest artistry of the Japanese craftsmen, and the convenient size and intrinsic charm of these dainty utensils (originally, perhaps, made for seals) have caused them to be much favoured by collectors.
Encyclopedias
No relaxation preprocessing is needed for the parallel algorithm to work on this class of CSPs.
Science
Therefore initial studies of Brazilian propolis were frequently focused on this class of compounds.
Science
So many researchers focused on this class of equations [22] [24].
Science
There is a wide variety of VRPs and a broad literature on this class of problems.
Structural information on this class of proteins would be highly useful for rational drug design.
Expert writing Tips
Best practice
Prefer using "in this class" or "during this class" to ensure grammatical correctness. While "on this class" is frequently used, it's considered incorrect in standard written English.
Common error
Avoid using "on" when referring to participation or activities within a class. "In" or "during" are more appropriate: "I learned a lot "in this class"" instead of "on this class".
Source & Trust
75%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "on this class" typically functions as a prepositional phrase that modifies a verb or noun, indicating a relationship or focus regarding a particular class or course. As Ludwig AI notes, it's not considered grammatically correct in standard English.
Frequent in
Science
56%
News & Media
33%
Encyclopedias
2%
Less common in
Formal & Business
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
While the phrase "on this class" is quite common, as evidenced by the numerous examples provided by Ludwig, it is generally considered grammatically incorrect in standard written English. Ludwig AI analysis suggests opting for alternatives like ""in this class"" or "during this class" to ensure grammatical accuracy. Its usage spans across various contexts, including science, news, and encyclopedias, but leaning towards a more neutral formality. Therefore, while frequently used, it's best to lean towards grammatically sound alternatives for formal communications.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
in this class
Uses the preposition "in" which is the grammatically preferred preposition.
during this class
Refers to something happening while the class is in session.
for this class
Implies something is intended or designed for use within the class.
regarding this class
Indicates a discussion or information specifically about this class.
concerning this class
Similar to "regarding", indicating relevance or relation to the class.
with respect to this class
More formal, suggesting consideration of the class in a specific context.
related to this class
Expresses a connection or association with the subject of the class.
about this class
Indicates the topic of discussion or information is the class itself.
pertaining to this class
A formal alternative indicating relevance or connection to the class.
in relation to this class
Suggests a comparison or connection being drawn to the class.
FAQs
What is the correct way to say "on this class"?
The grammatically correct alternatives are ""in this class"" or "during this class". The preposition "on" is generally not used to refer to being enrolled or participating in a class.
Is "on this class" grammatically correct?
No, "on this class" is generally considered grammatically incorrect in standard written English. The preferred prepositions are "in" or "during".
When should I use "in this class" instead of "on this class"?
Use ""in this class"" when referring to being enrolled in a class or activities that occur as part of the class. For example, "I learned a lot "in this class"".
What are some alternatives to "on this class"?
Some alternatives include ""in this class"", "during this class", "for this class", or "regarding this class", depending on the context.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
75%
Authority and reliability
3.8/5
Expert rating
Real-world application tested