Research Question 3 was designed to investigate the extent to which taking more units in computer science predicts STEM or non-STEM
student decisions in enrolling in either 4-year or 2-year postsecondary institutions, when controlling for credits earned in math and science,
ACT math scores, gender, SES, and racial background. The goal of Research Question 3 was to test whether there is a significant difference in
enrollment between 4-year and 2-year institutions associated with computer science education at the K-12 level. To articulate Research
Question 3, the following four comparison analyses between 4-year and 2-year institutions were conducted: (a) STEM students in 4-year
postsecondary institutions vs. STEM students in 2-year postsecondary institutions; (b) STEM students in 4-year postsecondary institutions
vs. non-STEM students in 2-year postsecondary institutions; (c) non-STEM students in 4-year postsecondary institutions vs. STEM
students in 2-year postsecondary institutions; and (d) non-STEM students in 4-year postsecondary institutions vs. non-STEM students in 2-
year postsecondary institutions. These comparisons determined whether a significant difference exists in student enrollment patterns
between 4-year and 2-year postsecondary institutions across college major choices associated with taking more units in computer science,
as well as the selected control variables listed above.