Contact Tracing (Isolation/Quarantine)

Communication Regarding Positive COVID-19 Case

We continue to take the health and safety of our students and staff seriously. It’s important to know that students and staff who have been identified as a close contact will be notified directly by an administrator or school nurse in collaboration with the McHenry County Department of Health. A reminder, the district will not send emails regarding each individual positive case. In addition to our six school nurses, the district continues to employ three additional nurses to ensure contact tracing happens immediately and efficiently.

MCDH will make the final determination on who is to be quarantined and for how long. MCDH may determine that a close contact is not a candidate for modified quarantine (options 2-4 above) due to a high-risk exposure (e.g., sustained close contact without masking, outbreaks, etc.). MCDH may remove use of options from schools if it is determined that compliance for the option is not occurring or not possible for the school. MCDH may remove use of options from schools based on level of community transmission.

All external (i.e. outside of school) exposures will be investigated on a case-by-case basis. MCDH will determine whether modified quarantine options (options 2-4 above) can be used based on its investigation. If it is determined that the close contact meets criteria for modified quarantine, MCDH will notify the school liaison. Otherwise, all external exposures should quarantine at home for 14 calendar days (option 1 above).

If you have symptoms regardless of vaccination status, you will need to self isolate and get a COVID-19 test.

Quarantine Categories


The district offers free COVID-19 screening testing through SHIELD Illinois for students and staff. It is an OPT-IN ONLY program; it is NOT mandatory. By default your student will be opted-out unless you complete this FORM and submit it to Tests are available one day each week in each of the four buildings (Haber Oaks at CLS) during school hours. 

SHIELD testing is a saliva-based PCR test created by the University of Illinois. The test consists of depositing (spitting) a sample of saliva into a tube. The sample is sent out for analysis to test for SARS-CoV-2, the virus that causes the COVID-19 virus. Note: Samples collected are not used for research purposes and are disposed of after results are confirmed. To learn more about the SHIELD test, visit: The McHenry County Department of Health has declared the SHIELD testing the ‘gold standard’ of PCR testing. 

Please review the FAQ prior to opting-in to the program.

Regardless of when an individual ends quarantine, daily symptom monitoring should continue through calendar day 14 after the exposure.

Class Work During Isolation/Quarantine

Students who are quarantined will continue to have access to daily notifications, lessons and assignments on Canvas, District 155’s learning management system, which will allow students to continue with the course and have access to instructional materials.

Students may be allowed to Zoom in for lessons that are taking place in class. Not all classes have a full lesson every day so students should communicate with the teacher.

Students can Zoom with teacher(s) during their plan time or student support center times that will be posted on canvas. Students need to request access from the teacher.

Students are expected to complete daily assignments unless the teacher communicates other expectations.

Students that are absent for other reasons (not related to isolation or quarantine due to COVID-19) will NOT be allowed to Zoom into class.