Colleges typically do not include grades from transfer credit into the GPA that they calculate for their own purposes (e.g. academic honors, academic probation/dismissal, GPA needed to enter a major that is enrolled to capacity). Of course, a student who matriculates to the same college after taking courses from that college while in high school will see those grades count toward his/her GPA at that college.
However, professional schools (e.g. medical and law) will recalculate GPA using all colleges attended as an undergraduate, including college courses taken while in high school.