SOUTHLAKE, Texas — Southlake's Carroll Independent School District headed back to class on Tuesday, and for some students, it cost a little extra. Carroll this year raised the price of its school bus pass to $350 for the full year, or $205 for the fall semester, per student. Family pass prices were set at $730 for the full year or $415 for the fall semester. While Carroll offered a discounted rate if passes were purchased before July 17 -- $325 for the year, $180 for the semester, per student, and $705 for the year or $390 for the semester, per...