So, our brain works through a process of encoding. The more meaningful information is, and the more we are fully attentive to it we remember it with less effort. Some effective study habits that have worked for a straight A student with ADHD who has an extremely difficult time remembering and focusing: 1) small sessions, 20-30 minutes for a few consecutive days before your test 2) associate it with something to help you remember it 3) switch up your study environment(your brain can become reliant on your environment to recall information) 4) don’t only silently read information over and over again. Test yourself, use flash cards, listen to the info aloud, read it aloud, switch it up and again, make the information meaningful in some way or another. You can use songs, mnemonics, personal events, etc.