Not sure if it can work at all

There is a girl in the year above me in school. Our families are good friends and we recently spent new years eve together, in which time we always sat next to each other. We have alot in common, we have very similar interests, same lifestyle, same stage of education. When we talk, we laugh and she seems very confident around me, to the point that she gave me my first kiss on the cheek on new year's day. I want to compliment her, but I have embarrassing parents. I don't know if she likes me, because when we were last alone we were talking but she seemed a little nervous- but I don't know if that means she likes me, or is slightly awkward because she has figured out that I have a crush on her. The thing that makes me depressed is that even when we flirt, we always get onto the topic of school which makes me sad because I can't really get to know her. To me this also means that if we were to go out then it wouldn't work because I wouldn't treat her right as I would be constantly paranoid about work as education is the priority for both of us. It makes me feel like we won't have a chance until later life and by then it will be too late. I also get extremely stressed, and have no courage to ask her out, and I sort of know her friends but barely and I take oppurtunities to talk to her friends but they rarely come up. I think that she is so beautiful and cannot stop thinking about her. I feel like I could tell her anything. I am not in the friend zone, we have got closer recently and will get her contact numbers when I get a chance (I have never had a problem with that), I also avoid being clingy and we touch, but not intimately. We have considered study 'dates' in the past. I am a teenager and have had crushes in the past- but this one is different. I can see a genuine future and really care for her. We have known each other for about 6 years. I have considered asking her out so many times but the way the both of our lives presents so many obstacles. I also saw her in a bikini recently and if it were any other girl I would have probably peeked alot if you know what I mean. I just don't see her like that, and her like that receives much less attention than, for example, how stunningly beautiful she looked on the night of new year's eve at the fancy dinner. I can't eat or sleep since we had a brief oppurtunity to be alone together and try to get to know each other. At the time of writing this she is 15 and I am 14.