I am working in a pre school so i wanted to know if the heartsaver first aid hands on CPR is good for me?

Yes, Ofcourse

Although Heart Saver is good for you but I am just trying to give my view
1. Heart Saver is a combination of Adult as well as Paediatric first aid and CPR training.
2. If you are a pre school teacher then I beleive you can go for specific training of “Paediatric First Aid” designed to emphasize more on kids safey.