more news, SPCC just called me (9: 05 pm) to confirm the cancellation of 25/8's O day, and i asked her the dressing code again on science workshop and she said someone will call me again.... so have to wait again
As told by staff of SPCC, casual wear is fine for both Science Workshop and O Day. There is also no special requirement for student photo -- just make sure that he/she wears the school badge.