They way you describe the orghierarchy, I would have considered using a separate instance with the hierarchy Country, province, district, administrative post, village, school (i.e. 6 levels). BUT if you also want the pregnancy data to somehow be linked to the nearest health facility, it changes things.
- You say Tracker program - just confirm that the Tracked Entity Type is PERSON (i.e. the pregnant teenager).
- A village can be small - are you sure that each school only have learners from a single village? In most countries that would not be the case, one school would typically have learners from several villages. If yes, then the village you are interested in is basically part of the teenager’s home address.
- What is the relevance of the “administrative posts” here? What do they have to do with Teenage pregnancies, i.e. why do you want to analyse the data using those posts?
- How does health facilities relate to these pregnancies - do you want to register which health facility that is responsible for providing reproductive health / contraceptives to these teenagers, and/or which health facility that are responsible for their care during the pregnancy (or possibly Termination of the Pregnancy, if relevant/allowed)?
What I am basically saying is that you need to determine the importance of both health facility (facilities) and the school in terms of analysis and actions/interventions. Because you can use an orghierarchy ending with the school or the one ending with the health facility - and then add the other “geographical” relationship as one or more attributes.
Analysis based on the orghierarchy is always easier, since it is a clear-cut hierarchical and well-defined data set. But you can run analysis based on one or more attributes too, like admin posts & village & school, it’s just a bit more cumbersome. One advantage of having both village (aka home address) and school as just attributes (possible option sets if you have authoritative lists of both) is that you can have several villages for every school but also several schools per village, as indicated above. I do not even know which country this is and how your villages and schools are linked, so difficult for me to comment further…
My 2c worth