New Registration For Full-Day Pre-K In The Arlington ISD Gets A New Look The 2020-2021 school year will bring a monumental change to Arlington ISD’s prekindergarten program. For the first time, the AISD will offer full-day Pre-K for 4-year-olds at nearly all elementary schools. Half-day Pre-K will still be offered for 3-year-olds. Registration opens Monday,…