Wrong ... the OP was a student in HS until June ... no where does it say it must be college ... just full time student.  So his parents had the right to claim him so he will not get a stimulus check. 

Who can I claim as my dependent?

You can claim a child, relative, friend, or fiancé (etc.) as a dependent on your 2019 taxes as long as they meet the following requirements:

Qualifying child

• They are related to you.
• They aren't claimed as a dependent by someone else.
• They are a U.S. citizen, resident alien, national, or a Canadian or Mexican resident.
• They aren’t filing a joint return with their spouse.
• They are under the age of 19 (or 24 for full-time students some part of 5 months of the year).
  • No age limit for permanently and totally disabled children.
• They live with you for more than half the year (exceptions apply).
• They didn't provide more than half of their own support for the year.