stp please read

as I understand for the first 5 calendar years of F1, one should use 1040NR and can claim $5000 treaty benefit, but not standard deduction (can itemize, though). From the sixth year and on, one should use 1040 and can claim both treaty $5000 and std deduction.

but in your previous post:

"03年是RA, 按居民報稅, 可以申請$5000.00 TREATY, 但申請了這$5000.00 TREATY 你就不能用STANDARD DEDUCTION, 你根據你的情況看要哪個--TREATY OR STD DEDUCTION. 如果99年(OR以後)持F1 VISA來, 02年你是NRA, 用1040NR OR 1040NR-EZ, 附表8843. READ PUB 519 AND 970."

please clarify.