I'm currently studying in PA on F-1 visa and have earned my only income last year from CA (internship while on CPT). I understand I should file state tax with CA as a nonresident. But I'm confused with my residency status at PA. I learned that PA treats foreigners the same as citizens for tax purpose, and students should consider their parents for their state residency. But since I'm a nonresident alien, does this mean I should consider my home country to be my permanent residence? As a result, no state tax form needs to be filed with PA?