Horizon Honors Calendar - Web horizon honors schools; First day of school august 19 & 20, 2021: December 18 & 19, 2023: Thanksgiving (no school) december 2023. Web horizon honors schools; Web welcome to horizon honors secondary school! Web november 23 & 24, 2023:
December 18 & 19, 2023: Web welcome to horizon honors secondary school! Web horizon honors schools; Web november 23 & 24, 2023: Web horizon honors schools; Thanksgiving (no school) december 2023. First day of school august 19 & 20, 2021: