Block Schedule is 4 classes on one day and 4 classes on the next day. All A-day classes will be blocks 1 - 4. All B-Day classes will be blocks 5-6. Usually, Block 1A or First Block is considered to be your homeroom class.
Your Schedule should have a class listed as two different blocks such as 03/07, which would be English Language Arts (ELA). This class will meet every single day.