Enrollment at Hawaii public schools dropped slightly this year to 180,409 students, the state Department of Education said Friday.

Enrollment at the state’s 256 DOE schools decreased by 495 students to 169,987 students, compared with last school year. At the state’s 34 charter schools, enrollment was virtually unchanged at 10,422 students. The overall drop-off is less than 0.5 percent.

The DOE said the largest fluctuations were seen in kindergarten and first-grade classes due to a later entry age for kindergarten that took effect last school year.

The five largest DOE public schools by grade level include:

>> High schools: Campbell (3,049);, Mililani (2,514), Waipahu (2,475), Farrington (2,376) and Kapolei (2,038).

>> Intermediate/middle schools: Mililani Middle (1,775), Kapolei Middle (1,394), Waipahu Intermediate (1,339), Maui Waena (1,108) and Kalakaua Middle and Kaimuki Middle (both at 974).

>> Elementary schools: August Ahrens (1,291), Holomua (1,231), Ewa (1,086), Waipahu (1,078) and Maili (1,015).

Among the state’s charter schools, the largest campuses are Hawaii Technology Academy (979), Kamaile Academy (910), Myron Thompson Academy (683), Ka Waihonua o ka Naauao (641) and Hawaii Academy of Arts & Sciences (592).

The DOE says it is projecting a stable enrollment rate due to birthrates over the next several years.