I was attending school with F1 status in 2023. Then, starting from September of last year, I began working with the work permit I obtained through the green card. This continued until December. I received the green card in February 24. As I prepare to file my tax report, I understand that it should be classified as NR based on my student visa. However, I'm concerned because I didn't utilize OPT/CPT, but instead, I worked under the work permit obtained through the green card. Hence, I'm unsure if NR is the correct classification.