Original sentence: Then after spending three years (Grades 7, 8, and 9) there, they go to the Mountain Brook High School to go through their last three years of education until college
Edited sentence: In addition to the public school system there is one private school, Highlands School, located in the Cherokee Bend region of Mountain Brook.It serves PreK-8th grade.Then after spending three years (Grades 7, 8, and 9) there, they go to the Mountain Brook High School, located in Brookwood Forst, to go through their last three years of high school education