it depends on the school. my school takes geometry in 10th grade. my old school took it in 9th grade. either one is normal. if you take geometry in 7th grade then you're pretty advanced!
New Jersey high schools start Geometry at 9th or 10th grade, depending on the student's aptitude for mathematics.Though, being in Geometry in 7th grade doesn't necessarily mean you're smart. Instead, motivated would be a better term.