Good information on new membership category and rates on the MSA page. Here is a cut and paste.
New membership options and related changes.
The USCF Delegates authorized several changes to the membership offerings for young players. Effective immediately, these are the options in effect:
Young Adult: For those 24 and under. $25 per year, includes 12 issues of Chess Life.
Youth: For those 15 and under. $19 per year, includes 6 issues of Chess Life.
Scholastic: For those 12 and under. $17 per year, includes 6 issues of Chess Life for Kids.
There will be a $2 affiliate commission available on all of these memberships.
Note that the age limit for the Young Adult membership (which used to be called the Youth membership) has been extended to age 24, so that it should cover most college-age members. Also, the new $19 Youth membership is available up to age 15, previously someone who was 15 would have had to purchase a $25 membership. The age cutoff for the Scholastic membership has been lowered to age 12 and the price has been reduced by $2.
There are two and three year options for all of the above.