1. If you only operate your drone indoors, you are perfectly fine, because the airspace in buildings doesn't fall under FAA guidelines. You can skip the rest.
2. If you do take your drone outdoors and use it for educational purposes you are not labeled a hobbyist or recreationalist. You will need to register your drone with the FAA and pay 5$ to register your drone no matter the weight. When the registration comes in, you will need to carry the registration when you fly it.
To find more information about safely flying your drone follow this link: https://www.faa.gov/uas/model_aircraft/
You can register your drone here: FAA.gov
You can find more information here: https://www.faa.gov/uas/registration/faqs/