qualification standards website GS Professional and Scientific Positions Qualification Standards for General Schedule Positions qualification requirements General Schedule Qualification Standards 1310 Physics Series OPM Classification & Qualification U.S. Office of Personnel Management http://OPM Qualifications Qualifications Handbook http://OPM Qualifications General Schedule (GS) classification system GS-11, 12 or 13 Research Position Qualification Standards for General Schedule Positions GS Professional and Scientific Positions General Schedule Qualification Standards GS-9, or at GS-11 General Schedule (GS) General Schedule Qualification Standards GS Professional and Scientific Positions Office of Personnel Management General Schedule Qualification Standards General Schedule Qualification Standards GS-9, or at GS-11 classified Qualification Standards for General Schedule Positions Qualification Standards qualification requirements position-classification standards Engineering (0800 job series) General Schedule Qualification Standards General Schedule Qualification Standards GS-11, 12 or 13 Research Position General Schedule Qualification Standards General Schedule (GS)