Makro
Porcupine
Okay, if you really want some helpful advice from people that aren't trolling you then you need to give a fairly brief description about the relationship.Really???? Give me other ideas then (No not headjobs, and sandwich ideas, i mean srs advice. )
How long have you known him?
How close are you two?
How long have you been this close?
How often do you see each other?
Do you sit with him at school?
Do you hang out with him much outside of school?
How long have you felt this way?
I'm serious about not being subtle. Guys can't pick up on it, the guys that can probably wont be interested as they're gay, way too feminine or have had way too much experience with girls and don't want a relationship. You want to search for indicators of interest (IOI). IOIs are basically what separates the platonic and sexual relationship between people. I've only spoken about this about girls so bear with me if I don't make all that much sense trying to relate it to picking up a boy.
So you've got a definition, this should mean you're looking for things like him going beyond being a friend. Some of this will sound gay, but I'm just throwing things out there.
1. If you're out, and you need to walk home eventually or walk to somewhere out of his way, see how he reacts when you drop hints that you want him to walk you there. I'm assuming you live relatively close together so saying something like "yeah, it's such a shit, boring walk home" and probably flash a look at him. If he likes you, he'd be like "fuck yeah". You should be able to tell from the enthusiasm (good) or hesitation (bad).
2. "I really want to see X movie.." things like this provoke guys to ask you out. Now, this isn't exactly getting into his pants but if he asks you then he definitely appreciates your friendship and the more time you spend together (outside of school) is healthy.
3. Make yourself physically available. No, don't slut yourself off. Don't have poor body language. No crossed arms/legs. Keep giving eye contact. Leaving your hand by your side lets him grab it, but he's only going to grab it if he already likes you and is thinking of you.
4. This sounds really gay, but get physical in a friendly way. Wrestling/tickling/pretend fighting almost always end up in a position providing (or creating) sexual tension. Yes, a girl can initiate this. If this method works and you end up in a tangled or physically close position compared to before then you should be able to obviously tell if he's into you.
Anything to increase physical contact without being weird will help you out.
My mind's gone blank, answer those questions and I'll probably think of something a bit more specific. I don't mean to sound as if I've got the answers but I've thought about these things quite a bit and have seen and experienced a lot of these things at play.