The safety of all students is important

Schools need to know
on a daily basis where the students enrolled in their school are.

Parents need to know
that when they send their children to school they are actually there.

Parents (generally) do want their children to do well at school 
for many there is no second chance, so if children miss out then the chances of a successful future may be effected.

Irregular attendance
at school even at an early age, means that children quickly fall behind in learning.

Through irregular attendance
children miss out on the social side of school life. This often means that it becomes difficult to make and keep friendships.

Future employment
prospects are effected if children have poor attendance records.
 
Lateness
often leads to problems and such disruptions do impact on learning and other children in class. 

There is evidence
that some young people who miss school regularly for unjustified reasons finish up in anti-social behavior or crime.