We have one nearby in Laredo, but I always thought it was a middle school. I see them advertising for middle school programs in the summertime. We don't live in Laredo, but we shop there. But it's too far to go to school there every day. Given my screen name says Texas I didn't want to ignore you, but I don't have any information on that school. We have one local elementary and that's what we're going to use. (even though the wouldn't give him early entry to pre-k this year, due to State law., grrr).
Also, don't know what part of north Texas you're in but there's a gifted magnet in Carrolton Tx. & one in Garland Tx. that I was reading about. A STEM charter sounds like it would be good, but I'm a rookie mom so that's just a guess.