when i was a kid it was
k-6th elementary
7th-9th jr high (that area has since kept the grades/renamed as middle school)
10-12th high school,
where we live now
elementary ends at 5th
6th-8th still called junior high
9th-12th high school.
here's a unique one-my kids went to a 'one room schoolhouse' (actually 2 rooms) from 1st-8th. started out with all grades in one room but later changed to 1st-3rd/4th-8th with no identifier beyond what your actual grade was.
k-6th elementary
7th-9th jr high (that area has since kept the grades/renamed as middle school)
10-12th high school,
where we live now
elementary ends at 5th
6th-8th still called junior high
9th-12th high school.
here's a unique one-my kids went to a 'one room schoolhouse' (actually 2 rooms) from 1st-8th. started out with all grades in one room but later changed to 1st-3rd/4th-8th with no identifier beyond what your actual grade was.