As with all laws there are consequences when responsible parties do not adhere to that law.  The consequences for breaking the law on Compulsory Education are clearly defined in the law.  See a brief list below:
Warnings (verbal and written)
• for Parents
• Schools
• for Parents
• First Offense (up to fls. 500)
• Repeat Offense (up to fls. 2500) 
• for Parents (up to maximum 60 days)