The subtle signs of new romance can be difficult to detect, particularly in the structured school environment. However, it is possible to determine if a guy likes you by studying his body language when you're together and by searching for common signs that he has a crush on you. The best way to find out if a guy likes you is to ask him directly. If you are too shy to approach him, there are more discreet methods of figuring out what's going on in his head.
Take note every time you catch the guy looking at you during class. If you find him staring at you on a daily basis, it is likely that he is interested in you.
Lock eyes with him during class and study how he reacts. If he immediately looks away, blushes and appears frazzled, it is likely that he has a crush on you. If he does not seem bothered by the fact that you have caught him staring at you, it is less likely that he has a crush on you.
Interact with him during breaks, recesses and lunch, and determine if his behaviour is flirtatious. If he teases you playfully or picks silly fights with you, he may actually be flirting. Or he may be more direct in his admiration of you by giving you compliments and laughing at your jokes. Check for signs that he goes out of his way to make physical contact with you. For example, if he grabs you by the hand to pull you in his direction, pats you on the head after you say something funny or tucks in your shirt tag when it's sticking out, he may have a crush on you.
Ask your mutual friends what they think about the situation. They may have insight into his feelings that you don't. Ask them to observe the two of you and to honestly tell you if they think he likes you.
Ask him to be your partner for a school project or to help you on a classroom assignment. While you're working, see if he gets flustered when you talk to him which can be a sign that he likes you. If he continues to avoid direct eye contact, this could also be a sign that he is nervous because he likes you. Notice if he tries to impress you with humour, knowledge or physical strength. This is also a sign that he may like you.