As you consume Cannabis, its effect on memory loss is only subtle. It is way better since it does not give the same kind of memory loss when drinking too much alcohol in a short period that typically makes you experience an episode of amnesia.
When you are high from Cannabis, you may experience difficulties remembering things you learned from school. Aside from that, you feel fuzzy, and you cannot concentrate on something.
You have to be wary not to drink alcohol while smoking Cannabis, for it will make you crossfaded. It happens when you become too drunk and too high from weed simultaneously. When this happens, there is a possibility that you will experience amnesia.