I was already convinced that everyone can and should be part of math team. But I had another student who "surprised" me this year at the big Tri-State Math Meet at UW-Platteville this November and gives the case for why that is true.
I took about 50% of the High School this year, 51 students (out of 95) and set them in their teams with our t-shirt.
We had pizza, talked math, did math and had fun. And a young man - who I probably would not have selected if I brought only 1 team placed on the All-Academic team! Again - it can be and should be for everyone