It has been decided by School District U-46 that vacations will no longer be considered an excused absence, but will count as unexcused.
The language in the handbooks is below.
The law requires that children be in attendance at school whenever the child's school is open for instruction. The only approved vacation periods for School District U-46 occur during Winter Recess, Spring Recess, and Summer Vacation. Therefore, extended absences and/or vacations during the school year are discouraged. Valuable educational experiences are lost and grades may be affected. If an extended absence/vacation during the school year are unavoidable, the absence will be marked as unexcused and teachers will not be required to provide assignments during this absence.