Your experience is not unusual. On one hand, teachers may be "too busy" due to the common practice of placing students with a broad range of abilities in a classroom.
There is another reason that most educators and administrators that I have dealt with pretend that my child is not gifted enough (even though I have the numbers to show them) - it is because they do not want other kids (and their competitive parents) to find out that one kid got "special treatment" in class while their kid did not get to do the fun work that the other kid did. This is a true story that happened in our case.
