The phrase "a substantial teaching" is correct and usable in written English.
It can be used when referring to a significant lesson or educational content that has considerable importance or impact.
Example: "The seminar provided a substantial teaching on the importance of mental health in the workplace."
Alternatives: "a significant lesson" or "an important instruction".
And you're unlikely to get a substantial teaching-load reduction in the early years to assist you in getting your research started, although a one-course reduction may be possible if you ask.
Researchers hope the website can be developed into a more substantial teaching and learning resource in future.
A few schools of public health in middle-income countries have relatively substantial teaching on health systems.
And speaking of Swarthmore: Research plans sent to predominantly undergraduate institutions should be carefully designed to coexist with substantial teaching loads and to benefit from the participation of undergraduate students.
Teachers are put under pressure with substantial teaching responsibilities and scientific research work.
Given the substantial teaching mission of the VHA, physician resident participation may have been much larger than the 3% of visits for which a resident was listed as the primary provider.
In the Republic of Ireland, the submitted responses reveal that of the six medical schools, two included quite substantial teaching on biological weapons and bioterrorism but the others do not do so.
It was also not possible to obtain views from educators delivering informal education to students within programmes, despite participants' reporting that this likely made up a substantial proportion of teaching on OME.
A web-based method can be used as an alternate mode of teaching and learning and as a substantial supplement to traditional teaching methods [ 6].
Two-thirds are women, it finds; a substantial minority come from teaching or counselling backgrounds.
