I'm in 7th grade (or year 7 for british people).
In my school, it goes from 5th to 9th grade.
The idea for the contest was of the son of a school newspaper owner which is a member of PLUG (Portuguese Lego User Group), which, by the way, i am going to be associate too, who said to his mom:
"Why don't you make a school contest celebrating the 50 anniversary of the LEGO brick?"
And then, it started. But at the time of the deadline, only 2 MOCs were there: this one and a boat like Titanic (but not half as good as this one).
Oh, and i love Portugal too.