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courseWorkload

A Schema.org Property

This term is proposed for full integration into Schema.org, pending implementation feedback and adoption from applications and websites.
The amount of work expected of students taking the course, often provided as a figure per week or per month, and may be broken down by type. For example, "2 hours of lectures, 1 hour of lab work and 3 hours of independent study per week".
Values expected to be one of these types
Text
Used on these types
CourseInstance

Source

https://github.com/schemaorg/schemaorg/issues/1909