Ill. Admin. Code tit. 20, § 2602.130
a) Shift Coverage
4) Under the following conditions, except in extreme circumstances, supervision shall be provided by a person of the same gender:
There must be sufficient staff members to ensure a ratio of 1:8 staff per youth during waking hours and 1:16 during sleeping hours present in the detention area, awake and alert at all times, to provide supervision while youth are in custody.
b) Log Record
A shift log shall be maintained as a record of incidents and activities, including supervisory checks, occurring on the shift.
c) Peer Supervision
No youth shall be allowed to have authority or disciplinary control over another youth.
d) Night Hours
Designated lights-out time shall be determined by administrative policy but shall not be set earlier than 10 p.m.
e) Public View
To the extent possible, detained youth shall be protected from observation that reveals their individual identity.
f) Detention Room Observation Windows
Each detention room door shall be provided with an observation window of at least 60 square inches, with the smaller dimension no less than 5 inches wide, to provide visual supervision of the room. All glass shall be wire reinforced, heavy safety-type or high tempered, measuring at least one-fourth inch thick.