One Sunday,I was in the park with the children,and met Megan

One Sunday,I was in the park with the children,and met Megan who used to go to school with me.I told her about my situation.She suggested that I should do a course and get a qualification（资格证书）if I wanted to work with children.I didn’t think I would be accepted because I didn’t take many exams in school.She asked me to phone the local college and they
were really helpful.My experience counted for a lot and I got on a part-time course.I had to leave my job with the family,and got work helping out at a
kindergarten.
本段中最后一句helping out 能否换成to help out?为什么?