If yawl hang out at school together there isn't going to be an issue in the world. Eat lunch together, talk on the phone together. I would strongly suggest that you not profess undying love for her at this point...you simply are going to make a fool of yourself.
When you start driving and then you want to see her outside of school...you might have an issue with your father then...maybe...but then maybe not.
You have to remember as a very young man you have yet to have the long-standing dealings with hormones that are rather new to your system as yet. (what, maybe five years at best?)
If I knew when I was your age what I know now....whooooo boy!!!...I probably wouldn't have lived to see this age so...it is part of God's wisdom that your shortsidedness exists and God has given you parents that are there to look out for you in such matters. Your tastes and predelections have yet to fully develop and some of your experiences now are going to shape that...for both you and her.
Once you strike a match and blow it out you can't do it again...The match won't ever relight by striking it on a box again. So...avoid such heartbreaks by dating relatively few women ever seriously. Or play the role of "big spender" and date the whole world giving your heart to none but a select few.
Be nice, be respectful and occasionally you might have to remind her to behave in such a fashion as well.

Just cause they are women doesn't mean that they are perfect either. You only get one shot at youth...expend it wisely.