There are two possibilities why you may have been refused:
- Your one parent family payment and maintenance bring you over the limit for your family size without counting your salary from the home help job
- The payslip you sent in with your application may not have made it clear that your work was HSE Home Help, so the person assessing it may not have known to disregard it.
The best thing for you to do is to follow the instructions on the letter about asking for a review of your application. Your application will be looked at again, and if the back to school unit made an error, they'll correct it.