There's nothing wrong with being taller than him. Just wear flat shoes, and maybe don't poof up your hair. All of my relatives are short, and they use their naturally curly hair to make them look taller. Lol
I like a boy at school but he is shorter than me and I want to be shorter then him how can I do that?
Be patient as youre both still young and when he reaches Puberty, chances are he will grow a couple inches, maybe even more. You cant change Mother Nature without grave consequences and besides youre only as tall as you feel. I've known several short people over the years that have stood 10 feet or taller because of the huge heart and caring for animals and people. So don't let the height factor bother you or if you do, you're shorter than you think. Good luck