Isaac Fox principal Jill Brooks fulfilled her promise to dye her hair blue after her students surpassed the school’s summer reading goals. | Joe Cyganowski~For Sun-Times Media

Isaac Fox principal Jill Brooks came out with blue hair Friday because her students surpassed the school’s summer reading goals. Arden Chan receives award for reading a school-best 22,991 pages. | Joe Cyganowski~For Sun-Times Media

Isaac Fox principal Jill Brooks came out with blue hair Friday because her students surpassed the school’s summer reading goals. | Joe Cyganowski~For Sun-Times Media

Isaac Fox students dressed in blue Friday to match the new hair color of their principal, Jill Brooks. Students' participation in the summer reading program supassed 50 percent this year. | Joe Cyganowski~For Sun-Times Media