The Liftoff Diagnostics are broken up into strands, there are 4 for Math and 3 for Reading. Students do not have to take all 7 diagnostic tests at once, but they will need to at least take 1 diagnostic to begin working in their "My Galaxies."
Each Liftoff diagnostic test is adaptive, so there is not a set number of questions on the diagnostic. The total number of questions depends on how the student answers each question. It will begin with on-grade level questions and drop down in a vertical alignment to determine student proficiency levels for each skill.
For example, A 4th-grade student is asked a 4th-grade level question about fractions, if they answer the 4th-grade level fraction questions correctly they will move on to 4th-grade decimals. However, if the student got a 4th-grade fraction question incorrect, they would drop down to a 3rd-grade level fraction question, and so on. In short, the total number of questions on the Liftoff diagnostic assessments depends on the individual student and how they answer the questions.