High school semi-formal?

I have a high school semi formal coming up and I’m not sure what to wear. I know it’s always better to over dress than under dress, but I’m in high school and care what people think of me

Should I wear dress pants, dress shirt, jacket, and a tie or is that too much and more of prom attire?

I want to wear a tie, as it will be the easiest piece to match my dates dress, but I know a tie without a jacket can be tacky.

Any advice is much appreciated (I know the first think someone of you might say is to stop caring what people think, but you were all in high school once)