It was founded in 1980[2] to relieve overcrowding at Hillsboro High School caused by the city's rapid expansion.

Of 384 students, 328 graduated, 34 dropped out, five received a modified diploma, and 17 were still in high school the following year.

[11] Glencoe has won state championships in track and field, men's and women's basketball, and football (twice, in 1986 and 1994).

Its cross-town rival has been Hillsboro High School; however, Hilhi currently plays in the 5A-1 Northwest Oregon Conference.

Since opening, the school has used the off-campus Hare Field for football games.