No, it's not 11,000 uneducated kids on the island but in the whole of Belize. I don't know what the figure is for the island alone, but it has been suggested that it would be very low.
I do agree that given the two options it is more important to get the majority an education grounding than to advance one individual. But we shouldn't and probably don't have to make that stark choice. Enabling one talented individual from a deprived background to fulfil his potential is important for the others. It shows them what can be achieved and gives them, if not a target then at least a realistic aspiration for their own lives.
Education is a strange commodity. Many people in receipt of it resent it or certainly do not appreciate it at the time, yet afterwards they do realise its value and wish they could have had more of it. This is why most civilised countries make education compulsory - because they know that kids will realise what they have missed too late to do anything about it. IMO it is crucial that juniors do get an adequate and inspiring education.