The GOMS is a survey that uses graduates of 2- to 3-year colleges or higher education institutions as its population. The survey is carried out around September to November of the calendar year following the population's graduation.
The First Wave of the 2005 GOMS, which was initiated in 2006, the year the GOMS project was launched, was conducted on 25,000 persons(approximately 5 percent of the population).
In 2009, the survey design was modified to a short-term longitudinal survey. Beginning with the 2007GOMS, The survey has being performed for each subject on the next calendar year of graduation and two years later. The sample of the GOMS is composed of 4 percent of all college graduates who graduated from a 2-3 year college or higher education institution, which corresponds to 18,000 persons.
Sampling was carried out in accordance with the sample allocation by academic major group which was used as the stratification variable. Note that, although not implemented as an explicit stratification variable, the school and gender of the sample members should be considered schools were first arranged in order of decreasing population; within the schools, the units were arranged by gender, with male students listed before female students, so that systematic sampling could be carried out.