College vs high school

Do colleges separate your high school transcript and your college transcript? I do duel enrollment and take some extra classes on the side. My college gpa is way higher than my high school one so I was wondering if they take account of both, separate them, or disregard the college one.

It will depend upon each college. Are the college course grades listed on your HS transcript for dual enrollment?

This is how the California UC’s calculate GPA using college courses.

If a high school student takes a UC-transferable course at a college/university and lists it on their UC application, will the grade earned in the course be included in their GPA, even if it is not listed on their high school transcript?

Students must report all enrollment and academic coursework. If the course the student took is in an “a-g” subject area, the grade will be calculated in the GPA, and if the course is transferable, it will earn an extra grade point and college credit. Upon admission to UC, the student will be required to submit an official transcript from the college/university in addition to their high school transcript.