You are strongly encouraged to include your GPA on your resume. Many wish to have both overall GPA and the GPA in the major. List responsibilities, using action verbs and short phrases. This format can show consistent development in one direction. Major high school activities may be included in this section, particularly if you had a leadership position.
Employers look for demonstrated leadership.
In every case, be sure you have asked and received permission to list an individual as a reference before giving that name to a prospective employer. A notation about references should appear on your resume, but the actual references should be listed on a separate page.