Do Penn Foster Grades Impact GPA?

[29palms]

I was thinking of doing Penn Foster until I found out I may be closer to a degree from TESC. I am attracted to their tuition cost, and amount of time I can study without feeling rushed. However, I doubt they have disciplines associated to my degree plan in aviation maintenance such as the higher math. First I gotta find out what Tesc will give me, then I can check it out more in detail.