Mask Policy Update:
The state announced that beginning Saturday, March 12, indoor masking for students and staff in TK-12 schools and childcare settings will shift from required to strongly recommended, irrespective of vaccine status.
However, an individual who is a close contact or is exposed is required to wear a highly protective mask for 10-days indoors after last exposure, except while eating or drinking. Also, it is strongly recommended that an individual who tested positive for COVID-19 and meets the criteria to leave isolation after Day 5 wear a highly protective mask around others, except when eating or drinking for 10 days after onset of symptoms or, if asymptomatic, after the first positive test.
An upgraded mask is defined as a well-fitting, non-cloth mask with multiple layers of non-woven material with a nose wire.
A highly protective mask is an upgraded mask or a cloth mask meeting ASTM standards for high filtration efficiency (ASTM F3502-level 2). Please consider having students wear medical/surgical, N-95, KN-95, KF-94, or cloth masks meeting ASTM standards for high filtration efficiency (please be sure to consider whether N-95, KN-95, and KF-94 masks are the right size for younger students). Additionally, LACDPH states that, for those wearing surgical masks, double masking, with a cloth face covering worn over the surgical mask, is recommended for enhanced protection.
What are ASTM Standards?
The American Society for Testing and Materials (ASTM) has set a standard (ASTM F3502) for barrier face coverings, including cloth ("reusable") masks. Masks rated as ASTM F3502-Level 2 for particle filtration provide better protection than Level 1.
Some cloth ("reusable") masks are designed and tested to demonstrate that they perform at a consistent level. ASTM Certification is given to products like face masks based on their level of filtration effectiveness. When it comes to assigning an ASTM rating, the following criteria are taken into account: