Allen ISD dropping mask requirement and online learning option for 2021-2022 school year The mask requirement changes will go into effect in July. An Allen student does math calculations in this file photo. Beginning July 1, Allen ISD officials are planning to make mask-wearing optional for students and staff. 11:35 AM on May 5, 2021 CDT — Updated at 3:59 PM on May 5, 2021 CDT Updated at 3:57 p.m. on May 5 to correct the high school graduation date and last day of school. As the 2020-21 school year comes to a close, Allen ISD announced changes to COVID-19 protocols for the next school year. Beginning July 1, district officials are planning to make mask-wearing optional for students and staff, Superintendent Robin Bullock told parents, students and community members in an email earlier this week. The last day of the current school year is May 21.