In Texas it has been tradition for decades for the announcer or someone from the press box to lead the crowd in prayer for the Lord to watch over the players. The Supreme Court said it was unlawful. Of course I may quietly pray if I want, which is fine but my statement still stands, watch the Court overturn their ruling.
Ummm... ahem: "the Supreme Court said we can't pray at a football game" is *not* the same as "students couldn't lead crowds in prayer before football games."
As you yourself point out, you are free to pray all you like. It's when government agents (the school in this case) use their influence to lead prayer... that's trickier.
Besides: look at the state of publik edumacation. Do you really want the same people in charge of *that* trainwreck meddling in your religion???