“It’s the age thing. I wanted to make sure I had options,” said Saheela, a senior at the Wardlaw-Hartridge School in Edison.

In the end, 13 colleges accepted her – including six of the eight Ivy League schools.  After weeks of debate, Saheela settled on Harvard. She will be among the youngest members of the school’s freshman class.

“I’ll be one of the youngest. But I won’t be the youngest,” the soon-to-be 16-year-old said.

Saheela is among the millions of high school seniors who had to finalize their college decisions by Monday, the deadline for incoming freshman to send deposits to the school of their choice. Nationwide, this year’s college selection process was among the most competitive in history as most top colleges received a record number of applications.

Saheela joins a growing number of New Jersey students going to college before they are old enough to drive. Last year, Kyle Loh of Mendham graduated from Rutgers at 16. In previous years, a 14-year-old from Cranbury and two of his 15-year-old cousins also graduated from Rutgers.

For Saheela, her unusual path to college began when she was a sixth-grader at the Conackamack Middle School in Piscataway. Eager to learn more about her favorite subject, math, the daughter of Nigerian immigrants asked to move to a higher-level class. The school let her skip sixth grade entirely.

By high school, Saheela said, she was no longer feeling challenged by her public school classes. So, she moved to the Wardlaw-Hartridge School, a 420-student private school, where she skipped her freshman year and enrolled as a 10th-grader. Her three younger brothers, twins now in the ninth grade and a younger brother in second grade, all eventually joined her at the school.

School officials were impressed Saheela, one of their top students, didn’t spend all her time studying.

“She’s learned and she’s very smart. But she keeps pushing herself,” said William Jenkins, the Wardlaw-Hartridge School’s director of development.

Saheela also excels outside the classroom. She is a three-sport athlete, playing outfield for the school’s softball team, defender on the soccer team, and swimming relays and 50-meter races for the swim team. She also sings alto in the school choir, plays trombone in the school band and serves as president of the school’s investment club, which teaches students about the stock market by investing in virtual stocks.

Saheela began applying to colleges last fall. Her applications included her grade point average (between a 96 and 97 on a 100-point scale) and her 2,340 SAT score (a perfect 800 on the math section, a 790 in writing and a 750 in reading).

She was delighted when she got her first acceptance in December from California Institute of Technology. “I was so excited. I got into college!,” Saheela said.

More acceptances followed from Harvard, Princeton, the University of Pennsylvania, Columbia, Cornell, Brown, Williams College, Stanford, University of Chicago, University of North Carolina at Chapel Hill, Massachusetts Institute of Technology and Washington University in St. Louis.

On March 30, she got her sole rejection letter – from Yale. Saheela isn’t sure why the Ivy League school didn’t want her.

“My parents were thinking it was the age thing,” she said.

Saheela was torn between going to MIT and Harvard. A visit to both campuses last month made the choice easy. “She went to Harvard and she fell in love with the place,” said Shakirat Ibraheem, her mother.

Saheela said she wants to major in either neurobiology or neuroscience and plans to become a research scientist who studies how the brain works. As for her own brain, Saheela insists she is nothing special.

She credits her parents with teaching her to love learning and work hard. Her father, Sarafa, an analyst and vice president at a New York financial firm, would often study with her at night and home school her in subjects not taught at school.

“I try my best in everything I do,” Saheela said. “Anyone who’s motivated can work wonders.”