No, future jobs will not be able to see that on your record. Your information if you choose to disclose it, is protected under the Americans with Disability Act (ADA) which provides people with a documented disability with certain accommodations so that they have an equal chance of being successful as people without a disability. Your teachers won't even know what the disability is, just that you can use the accommodations if you need them. I'm in grad school and was just diagnosed with ADHD, so I just went through this process. It's up to you whether you choose to tell them, but the benefits are worth it. You can get things such as extra time on tests, a distraction free environment to take tests, increased break time to stay focused, note takers, or the use of recording devices, depending on what you require to be more successful and what your doctor recommends. It's your choice, but they cannot hold it against you and it doesn't follow you.
Grad student, psychology intern, and also diagnosed with ADHD