This Physical Science CST Test Preparation Packet includes 45 original standardized questions to strategically target each of the CA Physical Science Standards for Grade 8. The format includes two columns, one for the multiple choice standard question and another for the explanation and notes. I was very purposeful in making this review packet and sequenced the questions starting with standard 1 and ending with standard 9. A detailed answer key and explanation/notes is provided for each question to help the student understand the reason for the correct choices. It has been an effective packet at my school and 79% of my students scored proficient or advanced on the science test.