Well i do see one problem in this. Have you asked if they think your retarded? Or does this come from you? If it comes from you, stop what your doing and focus on a good thing in life. Enjoy the little things and relax. Your not going to die, and every day is a new day. Practice is key and repeat what your bad at and want to improve. It seems like you want to be able to speak in front of the public. Then step out of your comfort zone and give those presentations. Sure it will seems scary at first but if you think your classmates don't shit their pants when they are giving a presentation your wrong. I'm a 25 year old student with a class full of 19 year olds and i asked them if they are scared. And sure enough most of them are even afraid to talk in public even without a stammer problem. It's not that uncommon. Giving presentations is just a thing everyone has to do and that's great. It's informative, helps people to understand subjects and can be fun as hell. I actually enjoy it now to give presentations. I bring body spay and a clean shirt for after but i had my success moments. A 15 min speech with 3 minor stammers. I felt in control and felt awesome. And strive to make that presentation my standard. Not everyone is good at everything, that's a fact. But don't mope about saying i can't do it. Its all in your head, its fixable and a common problem. If you haven't done it a 100 times consecutively and failed 100 times at that point you can say yea. I suck at it. But that's life. I for example am horrible at drawing i can learn how to make faces and do courses but i lack imagination and don't enjoy it probably never will. But i can guaranty you the 10th or even sooner time, you will be more relaxed then you where the first time. That's a fact with every fobia. Confront it, accept it and move on. It won't kill you, only have to do a couple of extra washes to get the sweatmarks from under my arms. Tip: Ask you teachers if you can practice giving a presentation in front of them. Ask you classmates, piers or a social group. If you are giving it your all people will help you. You just have to ask. A "No" is given but a Yes is obtainble. Your going to do great and enjoy everyday to its fullest. Make friends, have fun while doing it. And feel great while doing it. Don't forget you are not alone, we strugle with the same issues but it's not a stammer only problem. If you have any questions i will be glad to help you out. In written form or over chat for example. I'll join the discord channel soon.