Jupiter the great teacher. What you think where a teacher can be at his best? (Can answer in comments)
I think in following places:
1st house: Because 1st is the personality. So, The personality of the native would be like a teacher or counsellor. As Jupiter is benefic in nature and in ancient times ( I used ancient time because nowadays teachers are more courrpt and all that nonsense stuff, a very few are good),they tecahes others, guide otherand while living in huts.
5th aspect of Jupiter on 5th house, native will care about his/her education, disciple etc.
7th aspect on 7th house, will give tendency to guide others.
9th aspect on 9th house, will give tendency to follow Dharma, father and guru.
Note: Dr. APJ Abdul Kalam has exalted Jupiter in 1st house.
4th house (after 1st house it is the 2nd best position): Teacher is in an University. And also get exalted in Kaalpursha kundali.
Here, Jupiter will give education in good University or school, religious environment in family, religious mother, give property, wisdom etc.
5th aspect on 8th house, native will take care of his/her spouse money, values and in laws, can easily handle obstacles of life etc.
7th on 10th house, will make professor, astrologer, any type of counsellor or any other work related to academics or which requires study, will be very attentive for his work etc
9th on 12th house, expenses will become fruitful, will spend on good things etc.
12th house: Here Jupiter is like a Saint, makes one astrologer, spiritual, expenses on good things, God gives special grace to them, makes motivational speaker etc
5th aspect on 4th house: native cares about her mother, family, happiness, also cares about his character.
7th on 6th house: native also guides his/her enemies due to very humble character, sometime with this placement native cure his/her diseases or problem itself, and due to this they don’t have enemies or disease and also somehow with the help of god, he/she destroys enemies or diseases.
9th aspect on 8th house: will give values to his obstacles, and take lessons from it and improves himself/herself.
Note: I am not mentioning 5th and 9th house, because Jupiter in the 9th not gives maturity easily, because of 5th aspect on personality 1st house.. cares about his/her body.
And, being in 5th house Jupiter’s 9th aspect will be on 1st house personality… and Native will treat himself/herself like Father or Guru of others and gives more values to himself/herself, because of his/her intelligence try to dominate other… which is not good.