No. Each track's investments will automatically adjust as your student ages, shifting gradually from more aggressive investments to more conservative ones.
Your assets will be moved to the next portfolio in the track by the 5th business day of the month following the student's 5th, 7th, 9th, 11th, 13th, 15th, 16th, 17th, 18th and 19th birthdays. You should monitor your investments over the years and make adjustments if appropriate.