No. Everyone has a free will and if somebody really wants to do something, nobody will be able to stop them in the end. A parent or guardian cannot stop their child (particularly an older one) from doing anything in the end, but most children have been brought up with at least a little regard to obeying rules.
Although parents or guardians do have a massive influence on a child's life, other things such as the environment and the people around them also affect people, so it's not even as if a parent or guardian can blame themself if their child does something awful because it will never fully be their fault (unless they told them to go and do it). Therefore if a child does something wrong, it is essentially nobody's fault but their own.
A parent or guardian may not be able to stop their child from doing something wrong but I do believe that they should try and make an impression on how their child behaves early on in life. The later you leave a child's behavioural problems, the worse and unsolvable they will become.
Also, if a child does do something wrong despite everything, I believe the parent or guardian should punish them. Social services saying that a child being bad is just them testing their boundaries is utter rubbish. How will a child learn what they can and can't do if nobody ever tells them?











