The students were monitored and wanded as they entered the building Tuesday. Police will be on the scene throughout the day and until classes let out.
The school notified parents through email and automatic notifications.
The school posted this on its website:
Evanston Township High School will be closed to all outside visitors today, and students and staff will be required to stay in the building. We have received an anonymous phone call from a person outside the building who claims to have a gun. We know that schools do periodically receive anonymous threats, such as bomb threats, and those threats are usually not credible. Nonetheless, we are working with the Evanston Police Department and taking all necessary steps to protect our students and staff. There is a large police presence inside and outside of ETHS today. This is a precautionary step for everyone's safety.
Please do not come to ETHS today or ask that your student be dismissed from school today. We have secured the school and we will keep it secure all day. There will also be a huge police presence today when school is dismissed.