Do I have to be from a top school in Singapore to apply to Ivy League universities?

Do I have to be from a top school in Singapore to apply to Ivy League universities? What if I’m from a neighbourhood school or a poly?

Although students at Ivy League universities from Singapore are usually from some of the top schools, both local and international, I knew of a case of a poly student who got into Harvard. Ivy League schools take diversity of background into account too when admitting students, so it doesn’t hurt to give it a shot!