From January 2017 - May 2017, I was going to school in New York State, but I was still a resident of Connecticut because the residency rule does not apply to college students. I had a job at the college in New York State, so I am assuming that income must go on my CT return. I then moved to New York City in June of 2017, and from June 2017 - December 2017, I performed freelance work over the computer for a business located in Connecticut. I have lived in New York State for more than 183 days this year, meeting the requirement to file as a full-year resident of New York State.
