When it came time to enter high school, Lady Bird had to move away and live with another family during weekdays in the town of Jefferson, Texas, since there was no high school in the Karnack area. (Her brothers were sent to boarding schools in New York). She graduated third in her class at the age of 15 from Marshall Senior High School in the nearby county seat. Despite her young age, her father gave her a car so that she could drive herself to school, a distance of each way. She said of that time, "t was an awful chore for my daddy to delegate some person from his business to take me in and out." During her senior year, when she realized that she had the highest grades in her class, she "purposely allowed her grades to slip" so that she would not have to give the valedictorian or salutatorian speech.