1）130階段，是不是父母的那些出生公證，結婚公證，親屬公證都不需要？我總覺得不提交不放心的感覺，但是又沒有地方提交。
-Your need to submit the copy of your parents' marriage certificate for the I-130 for your father's, not need it for your mother. Also you need to provide the copy of your birth certificate for the I-130 for both your parents.
If you have 親屬公證, then just provide it for both parents (not required, but optional) and if you don't have it, not need to provide it. You also need to provide the copy of your US citizenship proof or US passport.
2）130 還要school record和census record，這個是不是optional的？從未聽說其他人交過啊
-Not need.
3）有一向問beneficiary 的 class of admission, 還說在綠卡上有這個標記，可是還沒有綠卡呢，這個是不是也是optional的不用填寫？
-Leave it blank or put "N/A" if your parents are currently present in China and will apply for the immigrant visa in China later.
