I want to say my graduating class at Trussville in 92 was ~300, looking at their enrollment numbers it really hasn't changed much. They've now got a 9th grade at the high school, didn't when I went to school there.
Things are spread out there...not here. It's just one big city after another. Frisco, TX just south of me went from 35k in 2002 when I moved out here to over 150k now. They have 10 high schools, 58k kids in the school system...let that sink in.