Teachers began administering the ISAT at some schools Monday, but the rest will begin the standardized test today.
Some teachers at Saucedo Scholastic Academy and Drummond Montessori are refusing to give the test.
Protesters argue that it wastes valuable instruction time.
But several parents say they have received automated calls from CPS stressing the importance of the ISAT.
CPS released a statement Monday saying “Chicago Public Schools is administering the Illinois Standard Achievement Test (ISAT) to students in accordance with state and federal law. The Illinois State Board of Education requires school districts to distribute the exam to all students in grades 3 through 8 to give them the opportunity to participate. The District is working with principals and teachers to ensure that students who are taking the ISAT are able to do so in a quiet environment that is free from distraction.”