We are not told in The Bible about Circumcision and the Midianites. You might find something in Midianite history.
It is a part of our covenant with HaShem, the creator.
Circumcision is a good idea if the owner of the penis concerned has an inclination to not wash regularly.
Zipporah
christian
Egypt has the highest female circumcision than any other country. Africa is the second most country with high female circumcision.
If by school you mean primary or high school, no. I am unaware of any school that teaches about circumcision in its curriculum.
If any foreskin remains, it's a partial circumcision.
No.
Genesis 37:36 And the Midianites sold him into Egypt unto Potiphar, an officer of Pharaoh's, and captain of the guard.
The Israelites, led by Gideon, defeated the Midianites in the Old Testament story found in the Book of Judges. It took place in the battle of Gideon's 300 against the massive Midianite army.
Gideon
yes i think