Answer :
The statement that is NOT true of the Little Rock Nine is: President Eisenhower refused to intervene in the situation and let it play out on the state level.
1. When they tried to go to school, they were attacked by a white mob: This statement is true. The Little Rock Nine, a group of African American students, faced violence and intimidation when they attempted to integrate into Little Rock Central High School in Arkansas in 1957.
2. The governor of Arkansas tried to use the National Guard to keep them from attending school: This statement is true. Governor Orval Faubus deployed the Arkansas National Guard to prevent the Little Rock Nine from entering the school, showing opposition to desegregation.
3. They ultimately had to be escorted to school by federal soldiers: This statement is true. After the initial resistance from the state, President Dwight D. Eisenhower federalized the Arkansas National Guard and sent federal troops to escort the students to school, ensuring their safety and upholding the law.
Therefore, the incorrect statement is that President Eisenhower refused to intervene in the situation. In reality, he did intervene by sending federal troops to protect the rights of the Little Rock Nine and enforce desegregation laws.