A score of 132 is certainly in the range that most definitions of giftedness agree qualifies as gifted. That said, there isn't a unified definition of giftedness, especially one used by all school systems in the same way that some other differences get defined.
A good next step would be to think about what you want from the school system or want the school system to provide. Do you want him in the gifted class? Well then look at what the admission or appeal criteria are. Would you consider subject or grade acceleration? Does the school have a policy on that? Are you done fighting the school and looking for appropriate enrichment outside of school?
And certainly these are common enough problems that people run into. Either just missing the cutoff using the school's testing, or just focusing on the lower achieving students, it does sometimes feel like the bureaucracy doesn't care. Advocacy often isn't fun.
