Do you have to take the senior high school entrance examination in grade three? Is it important to take the geography and biology exam in the second grade? If you fail, won't you give a junior high school diploma? The senior high school entrance examination is necessary, and nine-year compulsory education must be completed. As for the geography and biology exam, it varies from place to place. In some places, such as Wuhai, Erdos and other places in Inner Mongolia, geography and biology take the senior high school entrance examination, while in others, it is an open-book examination at the end of the second year of junior high school. If you pass the exam, you will pass. If you fail in the exam, you will not be awarded the diploma. I hope I can help you.