I think it's the same thing called GATE in our area (Gifted and Talented Education). Here they test them in the 2nd grade. My DD7 just took it this month and they'll let us know the results in April. Apparently, the whole process is very hush, hush. I know that they did verbal, and written, testing. They also tested them on things they hadn't learned yet, i.e. what's 15 x 15? I've been asking parents, and teachers, at our school, what exactly they do for GATE students and from what I can find out, it's up to each school how they handle "GATE identified students" Some schools have them in special classes, go on special trips, etc. Some just give them some additional, more exciting?, work to do, and collect the extra money from the state. Apparently, the state gives the schools more money for GATE students.
After checking at my school, and if my DD is GATE, I don't think I'll make any immeadiate changes for her. Our schools here are year round, and some of the schools will change them to a different track, to participate in GATE. We also have a GATE school nearby, that if my DD gets in, I will check out. This is the same, or similar, program that when I went to school was called MGM (mentally gifted minors). My DM recently told me the reason I didn't get in MGM was that I was too stubborn! When they tested me, if I thought my answer was right, they, apparently, couldn't convince me otherwise. I AM NOT STUBBORN, I'M NOT, I'M NOT!!
Hope this helps.