The term FUND-RAISING GRP. can be broken down into two parts: PAC (3 letters) and PTA (3 letters). PAC stands for Political Action Committee, which is an organization that raises money to support political candidates or causes. PTA stands for Parent Teacher Association, which is a group of parents, teachers, and staff members who work together to support and advocate for students in a school. Both PACs and PTAs are involved in fund-raising activities to support their respective causes.