FWIW...
At the G&T program my DD attends for Maths the majority of kids are boys. Selection is based on correctly answering 3/5 challenging word problem on tests administered 3 times throughout the year ( do not have the name of the test right now. There is no aptitude test other than that and no teacher recommendations either.
At the state college G&T program she attends the majority of pupils are boys, too. Here IQ/Standardised aptitude testing provides the bar to entry. Most of the parents that i have conversed with are immigrants (like me) and many of the pupils come from families where more than one language is spoken at home too.
They come from countries where education and achievement are still valued ( China, India, Pakistan, Thailand, Hungary, Columbia, Germany, Australia, UK etc) and either they have a preponderance of male children or they are self selecting the boys themselves.
Last edited by madeinuk; 10/24/14 09:39 AM.