USA Swimming sets up Age Group Motivational Times. There are Long Course Meters, Short Course Meters, and Short Course Yards times listed by age group and broken into B, BB, A, AA, AAA and AAAA time categories.
Some of the swim meets require that a swimmer achieve certain motivational times to attend. For example, the Nike Challenge requires swimmers to achieve BB Times to attend while State Meets are approximately A Times and Zones are usually AAA Times.
Age Group Motivational Times 2017-2020