The specifics of this discount depend on individual state laws, but usually only students between age 16 and 25 with a «B» average or better are legally eligible. (autoinsuresavings.org)
Not only that, but companies must comply with individual state laws in each state where they operate. (sharestates.com)
The ramifications related to being hit by an underinsured motorist vary by individual state laws. (en.wikipedia.org)