MUSD Free COVID-19 Testing Program Montebello Unified School District will be offering a free COVID-19 testing program for students and staff at our schools. Below you will see letters in English and Spanish with more information. Attached Files PARENT COVID on MUSD LTRhead 9-8-2021 .pdf Spanish PARENT COVID Ltr on MUSD LTRhead 9-8-2021 (1).pdf