I'm not totally sure what you are asking? In Indiana we have a number of Career Clusters Agriculture, Natural Resources Landscaping and Horticulture is one then they diverge into Health & Medical, Business, Industrial Technology, etc. Here it is just a way to separate career areas into related areas.
Agriculture Science & Management
Penn High School
I wish you the best with your debate. Here are some links to resources that may assist you as you explore the benefits of the AFNR Cluster for agriculture education courses. (I think that is what you are asking.) Personally, I believe the pathway concepts allows students to be aware of the diversity of careers in our industry, as well as helps them to see the knowledge and skills that will help them to acheive success in that career area. From a middle school perspective, it allows for students to engage in an Exploratory SAE.
Furthermore, there are National Agricultural Education content standards that are based on these pathway areas. See http://www.teamaged.org/council/images/stories/pdf/finalafnrstandardsv324609withisbn_000.pdf
Note: Biotechnology has been recently added as an 8th area and is not included in many of these resources as of yet.